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

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Question 416409: Solve y=-x+8 and x+y=7
A) This system has no solutions.
B) This system has infinitely many solutions
C) (1/2, 15/2)
D) (-1/2, 17/2)
Click here to see answer by ewatrrr(10682)

Question 416401: How many solutions does the linear system have?
2x-6y=-14
-2x+3y=7
Click here to see answer by htmentor(789)

Question 416411: Which ordered pair is a solution of the following linear system?
4x+3y=5
-2x+5y=17
A) (2,-1)
B) (4,5)
C) (-1,3)
D) (-4,7)
Click here to see answer by praseenakos@yahoo.com(507)

Question 416411: Which ordered pair is a solution of the following linear system?
4x+3y=5
-2x+5y=17
A) (2,-1)
B) (4,5)
C) (-1,3)
D) (-4,7)
Click here to see answer by ewatrrr(10682)

Question 416412: Hello what numbers can I use to graph y is grater than or equal to x+2 after doing the x any y chart and putting in any numbers which numbers do I use to graph and shade the side.
Click here to see answer by stanbon(57347)

Question 416402: What is the slope and y-intercept of -2y=6(5-3x)
Click here to see answer by MathLover1(6632)

Question 416291: Can you sketch the graph of this line: 8x+5y=-20

Click here to see answer by ewatrrr(10682)

Question 416228: y=3x-6 a.as the of x increases, the value ofy increase
Click here to see answer by ewatrrr(10682)

Question 416482: I am having problems with this equation... y=-5X(squared)+X+4 can you help me solve and graph this problem
Click here to see answer by Earlsdon(6287)

Question 416490: When can you say that there is no solution for a system of linear inequalities? Explain your answer and show with a system and graph.
Click here to see answer by stanbon(57347)

Question 416537: Find the value of y so that the line passing through (–3, y) and (4, 4) has a slope of –2.
Click here to see answer by josmiceli(9678)

Question 416589: Solve the system by the elimination method
4x-4y=2
16x+8y=14
Click here to see answer by praseenakos@yahoo.com(507)

Question 416944: Use this table to answer the following questions:
x y
1 -1/4
2 -1/2
3 -3/4
4 ???

Between x and y, would the correlation be positive or negative?

What is the missing value of y in the table?
How would the values of this table be interpreted in terms of linear regression?

If a "line of best fit" is placed among these points plotted on a coordinate system, would the slope of this line be positive or negative?

Click here to see answer by ewatrrr(10682)

Question 417190: If a is a system of two linear equations has no solution, then the graphs of the two equations must be _______________ lines.
Click here to see answer by stanbon(57347)

Question 417096: So the equation is as follows, -4x=8-2y We are suppossed to graph. I am assuming using intercept method since that is what the unit is about. However I have the solution sets but do not understand how they are getting there...I need step by step to understand this...then I can graph it myself...Please help me. Thank You!!
Click here to see answer by ankor@dixie-net.com(15652)

Question 417444: What is the equation of the line that passes through (4, -1) and (-2, 3)?
Can you help me answer this? I keep getting y = -4/6x + ? and it has to be written in general form.
Click here to see answer by Alan3354(30993)

Question 417438: line l goes through (4,-2) and is parallel to 4x+2y=5
Click here to see answer by MathLover1(6632)

Question 417511: slope -3/2 ordered pair(-2,1)
Click here to see answer by nerdybill(6958)

Question 417554: how do you find the vertex of y=225-x^2
Click here to see answer by ewatrrr(10682)

Question 417554: how do you find the vertex of y=225-x^2
Click here to see answer by Gogonati(809)

Question 417619: sovle with a compound inequality
(x+10)(x-2)(x+2)>0
my answer is -10
Click here to see answer by Gogonati(809)

Question 417648: How do you write 4x-7y+8=0 in slope intercept form?
Click here to see answer by stanbon(57347)

Question 417594: how do i write an equation by looking at a slope line?
Click here to see answer by rfer(12660)

Question 417316: How do u plot this linear equation: y=.15x + 10
Click here to see answer by scott8148(6628)

Question 417876: Can you please show me a graph that has the slope of -3/2 and a y intercept of 1? Thanks a bunch!!
Click here to see answer by stanbon(57347)

Question 417882: a line having a slope of 3/4 passes through the point(-8,4) . Write the equation of this line in slope-intercpt form.
Click here to see answer by mananth(12270)

Question 417721: Jessica is driving on the highway. She begins the trip with 14 gallons of gas in her car. The car uses up one gallon of gas every30 miles.
Let g represent the number of gallons of gas she has left in her tank, and letd represent the total distance (in miles) she has traveled
Click here to see answer by ankor@dixie-net.com(15652)

Question 417933: determine whether the ordred pair is a solution of the inequality. (9,10); 5y-6x>2
Click here to see answer by rfer(12660)

Question 417920: Please help! Desperately need assistance. I feel braindead! This is so confusing. Water is being pumped out of a pool. the number of gallons "W" left in the pool at a time "T" can be modeled by W(t)= -7t plus 350. Please help. it will be greatly appreciated.
Click here to see answer by ankor@dixie-net.com(15652)

Question 418009: solve the system of equations by graphing. Then classify the system
x+y=9
x-y=3
What is the soltion of the system. Select the correct choice below and if neccessary fill int he answer box to complete your choice.
A- The solutin is___
B- There are infintely many solutins
C-There is no soluton
Click here to see answer by mananth(12270)

Question 418018: (3x+5)/5=10
Click here to see answer by shree840(260)

Question 418001: Determine whether the ordered pair is a solution of the inequality.
(9,10);5y-6x>2
yes or no
Click here to see answer by Edwin McCravy(8909)

Question 417833: determine if the pair of lines is parallel, perpendicular, or neither
2x+5y=8
5x-2y=1
Click here to see answer by robertb(4012)

Question 418063: if i have the ordered pairs (-5,-6)(3,4) what would my linear equation be ?

Click here to see answer by MathLover1(6632)

Question 418072: if i have the ordered pairs (-3,5) (6,-8) what would my linear equation be ?

Click here to see answer by Gogonati(809)

Question 418264: having troble helping my son with the following eq:
F(x)=mx+b /
The work sheet gives 3, 5 and 7 as inputs (x) and resulting output (F) being 5, 7, 9
F(x) = x+2
They want him to take it out two more places.
I know the answer.
How do I explain this to him.
Click here to see answer by Edwin McCravy(8909)

Question 418304: Enter the equation of the following using line in slope-intercept form.
slope = 3; y-intercept is -3
Click here to see answer by josmiceli(9678)

Question 418304: Enter the equation of the following using line in slope-intercept form.
slope = 3; y-intercept is -3
Click here to see answer by oberobic(2304)

Question 418335: Enter the equation of the following using line in slope-intercept form.
x-intercept = 2; y-intercept = -3
Click here to see answer by rfer(12660)

Question 418347: Jack measured 1 amp as the total current in a certain circuit when he applied 20 volts to the circuit. When he applied 60 volts, he got a measurement of 3 amps. Write a linear equation describing the relation between voltage and current, and calculate the total current when 50 volts are applied to the circuit.
Click here to see answer by ankor@dixie-net.com(15652)

Question 418451: what is the slope of the line that passes through (1,-5) and (4,3)
Click here to see answer by robertb(4012)

Question 418529: Find the x- and y-intercept and write the equation of the line 2x+3y=-18 in slope intercept form.
Click here to see answer by mananth(12270)

Question 418677: Average rate of change...
f(x)=6x from x1=0 x2=4
Would it be 6 because change is 6 all around? Is there a way to work this out other than just knowing that?
Click here to see answer by Alan3354(30993)

Question 418766: Tickets for a concert were priced at $3 for students and $5 for nonstudents. There were 1500 tickets sold for a total of $5000. How much revenue was generated from the sale of the student tickets?
Click here to see answer by duckness73(43)

Question 418975: What is the slope of the line joining (-8,1) and (4,10)?

Click here to see answer by rfer(12660)

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, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 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, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 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