Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

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Question 612865: solve by graphing. y=1. y=x
Click here to see answer by Alan3354(69443)

Question 612990: how to graph x/8- y/3=1? Please help me
Click here to see answer by nerdybill(7384)

Question 613010: Write thd equation of the line passing through (4,7) and parallel to 6x-7y=10
Click here to see answer by ewatrrr(24785)

Question 613005: What is the equation of the solution in point-slope form and slope-intercept form? Passing through (-4,-2) and (1,3)
Click here to see answer by jim_thompson5910(35256)

Question 613076: teacher gave following equation for straight line
4y = 16x + 32
then states to divide everything by 4
why divide by 4?
this is for the y = mx+b
Click here to see answer by scott8148(6628)

Question 613071: Find the equation of the line containing the given pair of points
(-2, -6) and (-8, -9)
Click here to see answer by solver91311(24713)

Question 613305: Shelly has $250 in her savings account. She spends $30 per week. Describe the slope in this situation.
Click here to see answer by jim_thompson5910(35256)

Question 613305: Shelly has $250 in her savings account. She spends $30 per week. Describe the slope in this situation.
Click here to see answer by stanbon(75887)

Question 613315: Find the coordinates of the image of point R(�1, 3) rotated 90� about the origin. (4 points)
Click here to see answer by jim_thompson5910(35256)

Question 613315: Find the coordinates of the image of point R(�1, 3) rotated 90� about the origin. (4 points)
Click here to see answer by ewatrrr(24785)

Question 613267: The federal government subsidizes many types of farms. How does the government determine what type of farm to subsidize? Why should or shouldn't the government subsidize farms?
Click here to see answer by Alan3354(69443)

Question 613536: Solve the problem by elimination
-6x-6y= -12
-6x+7y= 14
Click here to see answer by edjones(8007)

Question 613582: give the slope of the line defined by the equation 5x-7y+3=0

Click here to see answer by radh(108)

Question 613701: consider the following function f(X)=2x -8 calculate f(3)
Click here to see answer by ewatrrr(24785)

Question 613747: Find an equation of the line that contains the following pairs of points? (3,3) (1,6)
Click here to see answer by Alan3354(69443)

Question 613767: Determine weather the two lines are parallel, perpendicular, or neither.
3x+2y=1
-2x+4y=1
Click here to see answer by scott8148(6628)

Question 613787: The function f has f(6)= -22 and f(10)=-46
Click here to see answer by stanbon(75887)

Question 613790: Find the slope of each line
y=-x/4 + 8
i plug in the 0 and have 0/4 +8
whats next
Click here to see answer by lwsshak3(11628)

Question 613792: Find a formula for the linear function with slope (0.7) that passes through (0.1, 0.9)
Click here to see answer by lwsshak3(11628)

Question 613793: "find the intercepts of the equation"
-4x+2y=8
x-intercept
y-intercept:
Click here to see answer by jim_thompson5910(35256)

Question 613797: Solve -2|h - 7| = - 28
A. No solutions
B. h+21
C. h=-7, h=21
D. h=7, h= -21
Click here to see answer by stanbon(75887)

Question 613867: This table shows 10 observations of a pair of variables (x,y). The variables x and y are positively correlated with a correlation coefficient of 0.977 Find the slope b, of the least squares regression line, y= ax + b, for these date.
____________________________________

X 1 2 3 4 5 6 7 8 9 11

Y 2 4 5 8 9 12 13 14 15 16
____________________________________

I TRY THIS: (16-2)= M(11-1),10M = 14, M = 1.4

BUT IT'S WRONG

Click here to see answer by rfer(16322)

Question 613910: if the graph of a line has a positive slope and a negative y-intercept what happens to the x-intercept if the slope and the y-intercept are doubled?
Click here to see answer by stanbon(75887)

Question 614186: please help with this equation:
given y= -x^2+2; what is (x,y) when x is -1
I tried solving below:
y= -(-1)^2+2=
y= -1+2
Y= 1
in order to get X, should I plug the answer for y into the problem now?
Click here to see answer by ewatrrr(24785)

Question 614203: What is the slope of a line parallel to the line with the equation y = -2/5x + 7?
Click here to see answer by ewatrrr(24785)

Question 614234: y=60x+30
Please answer!
Click here to see answer by Alan3354(69443)

Question 614309: Write the equation in slope intercept form of the line perpendicular to the graph
Y= -3/4x + 7
Click here to see answer by mananth(16946)

Question 614314: Solve the system of equations by elimination
7x + 6y=30
9x - 8y= 15
Click here to see answer by mananth(16946)

Question 614312: Solve the system of equations using substitution
3x + 4y=12
2x + y=10
Click here to see answer by angelicnwa(2)

Question 614312: Solve the system of equations using substitution
3x + 4y=12
2x + y=10
Click here to see answer by mananth(16946)

Question 614303: What is the slope of the line passing through p1(4,-8) and p2(6,10)
Click here to see answer by mananth(16946)

Question 614428: Jim washes cars to make extra money.
He made a graph of the number of cars he washed over 5 days.
On the first day, Jim washed 5 cars, on the 2nd day he washed 7 cars, the third day he washed 9 cars, the fourth day he washed 11 cars and the fifth day he washed 13 cars.
If the points on Jim's graph form a linear pattern, what is the slope of the line?
A. -2
B. 1
C. 2
D. 3
Please explain, I really need help on this one!
Click here to see answer by richwmiller(17219)

Question 614453: I am having a hard timfiguaring out what the relative max and min. is. how to caculate it? I have a TI- 83 plus. question might be: f(x)= 2-x^2 or f(x)= x^3 +4x^2
Click here to see answer by Alan3354(69443)

Question 614459: Give the equation of the x-axis
Click here to see answer by Alan3354(69443)

Question 614466: Find an equation in slope-intercept form for the line passing through each pair of points: (-4, 4), (-5, -3)
Click here to see answer by Alan3354(69443)

Question 614487: P has coordinates (-1,2). Find two positions for point Q so that the slope of PQ is 2.
Click here to see answer by richwmiller(17219)

Question 614457: "Find the intercepts for the equation"
4x-y=4
x-intercept:
y-intercept:
Click here to see answer by rfer(16322)

Question 614526: Using the graph, which of these ordered pairs is the best estimate of the solution of the system y = 3x + 2 and y = -1/4 x + 1?
A. (0.5, 0.5)
B. (-0.3, 1.1)
C. (1.2, 0.8)
D. (0.8, -0.5)
the points of these i found on the graph are
y = 3x + 2 (-2,-4) (-1,-1) (0,2)
y = -1/4 x + 1 (4,0) (0,1) (-4,2)
Click here to see answer by ewatrrr(24785)

Question 614652: find the slope
y=5
Click here to see answer by Alan3354(69443)

Question 614837: Find an equation of the line that passes through the given point and has the given slope. Express your answer in slope-intercept form.
(8,0),m = -3
Click here to see answer by rfer(16322)

Question 614941: Please help me, I am confused
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
-x + 2y = 8
-x + 10y = 48

Click here to see answer by ankor@dixie-net.com(22740)

Question 614943: The projected cost of a new high school is $20,066,340 of which $5,216,340 will be covered by available grants. Using data from the last census, the planning committee estimated the cost per town resident. However, new census data reveals that the population has increased by 2200 people, reducing the cost per town resident by $75. What is the current population of the town?
I started out with this equation, by subtracting the grant money ($5,216,340) from the projected cost ($20,066,340). The total cost will be $14,850,000.
I know that if I divide that by each resident (p) then I'll get the amount that each resident has to pay. Because I couldn't figure out the formula, I just plugged in numbers until I got a difference of $75. So the original population was 19,800 and they would have had to pay $750. The new population (19,800 + 2,200) would have to pay $675, which is a difference of $75. There's the answer. My question is, what is the actual formula for figuring out this equation without having to do all that guesswork?
Thanks for your help!
Click here to see answer by stanbon(75887)

Question 614935: write the equation in the form Ax+By+C=0
a) it is a vertical line which passes through (-3,2)
b) it is a horizontal line passing through (4,-1)
c) parallel line parallel to 3x+2y=4 and passes through (4,-1)
Click here to see answer by lwsshak3(11628)

Question 614942: could you please help me in Solving using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.

-7x + 5y = -56
-21x � 2y = -168
greatly appreciated
Click here to see answer by lwsshak3(11628)

Question 614974: explain when to use a solid line as a boundry when graphing a linear inequality
Click here to see answer by Theo(13342)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 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20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 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