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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 316076: Suppose that the credit remaining on a phone card (in dollars) is a linear function of the total calling time (in minutes). When graphed, the function gives a line with a slope of -0.15 See the figure below.
There is 34.05 in credit remaining on the card after 27 minutes of calls. How much credit will there be after 34 minutes of calls?
Click here to see answer by josmiceli(19441)

Question 316125: Find the gradients and y-intercepts of the following lines:
a) y = 2 x - 3
b) y = -3
c) 3x - y - 6 = 0
Click here to see answer by Fombitz(32388)

Question 316241: Enter the equation of the following using line in slope-intercept form.
slope = 3; y-intercept is -3
Click here to see answer by vleith(2983)

Question 316284: What would a graph look like with interval [-4,10]. What is the difference between the interval [-4,10] and the interval (-4,10]? How does this look on a graph?
Click here to see answer by Fombitz(32388)

Question 316296: Question#1 Find the standard form of the equation of the line that passes through the points (-2,-4) and (-7,-2).
Question#2 Find the equation of the line, in slope-intercept form, that contains the points (-2,7) and (-5,5).
Question#3 What is the slope of the line y=2/3x-3.
Question#4 What is the slope of the line y=-2/3x-2.
Question#5 Write the equation of the line, in slope-intercept form, that contains the points (-8,-9) and (-8,-5).
Click here to see answer by jim_thompson5910(35256)

Question 316303: Choose the answer that correctly expresses the following equation in standard form.
3y = 4x + 9
a) 4x - 3y = 9
b) -4x + 3y = 9
c)4x + 3y = 9
d)3y - 4x = 9
Click here to see answer by moshiz08(60)

Question 316309: Simplify :
y+2 over -y - 2 or y+2 divided by -y - 2
a)1
b)2
c)-1
d)-2
Click here to see answer by jim_thompson5910(35256)

Question 316309: Simplify :
y+2 over -y - 2 or y+2 divided by -y - 2
a)1
b)2
c)-1
d)-2
Click here to see answer by moshiz08(60)

Question 316309: Simplify :
y+2 over -y - 2 or y+2 divided by -y - 2
a)1
b)2
c)-1
d)-2
Click here to see answer by nyc_function(2741)

Question 316319: Write an equation in slope-intercept form of the line joining the points A(-10, 50) and B (10, -30)
Click here to see answer by jim_thompson5910(35256)

Question 316357: Find the slope of the line determined by the equation 2x=y.
A) m=3
B) m=2
C) m=-3
D) m=-2
Click here to see answer by rfer(16322)

Question 316367: graph the function g(x)=(x-1)to the 3rd pwr
Click here to see answer by jim_thompson5910(35256)

Question 316374: The function is call the _________ function.
a)quadratic
b)absolute value
c)squaring
d)cubing
Click here to see answer by jim_thompson5910(35256)

Question 316373: complete the following truth table for the equation :
x|y
-1|?
0|?
5|?
Click here to see answer by rfer(16322)

Question 316379: Find the values of x and y that solve the following system of equations:

5x-6y=-1 and -3x-2y=23
Click here to see answer by mananth(16946)

Question 316370: given , find f(3)
a) -3
b) 2
c) -2
d) 3
Click here to see answer by checkley77(12844)

Question 316393: I need help solving an equation. I've tried it so many times and still cannot get the right answer, I dont know what I'm doing wrong.
0.1(x+10)=0.3x-4
Click here to see answer by JBarnum(2146)

Question 316355: Find the equation of the line perpendicular to the line x=4 and passing through the point (4, 2).
A) y=-4
B) y=2
C) y=-2
D) y=4
Click here to see answer by Fombitz(32388)

Question 316360: Tell whether the following equation determines y to be a function of x: y2 =x+3
a)yes
b)no
c)sometimes
d)only when x =-1
Click here to see answer by Fombitz(32388)

Question 316353: Given g(x)= 5/x+3, find g(-3)
Click here to see answer by Fombitz(32388)

Question 316368: 17. graph the function f(x)=x^2-2
Click here to see answer by Fombitz(32388)

Question 316377: line 1 has a slope of 4 and y- intercept of (0,6).line 2 has a slope of 4 and a y intercept (0,9).
a. are they parallel, perpendicular or neither?

b. how many solutions are there to the system?
c. are they consistent or incosistent?
d. are they dependent or independent?
Click here to see answer by Fombitz(32388)

Question 315642: graph an equation of the form y = mx + b
y = -2x + 2
Click here to see answer by moshiz08(60)

Question 316351: Draw the graph of the following linear function and give the domain and range: h(x)=-2x+3. there is a graph with these points:

y (axis)
(0,3)

(1, 1)
x (axis)
Click here to see answer by moshiz08(60)

Question 315644: graph an equation of the form y = mx + b
y = 3x - 4
Click here to see answer by moshiz08(60)

Question 316500: what line is parallel to x-8y=-1?
Click here to see answer by Fombitz(32388)

Question 316512: What is the slope of any line parallel to the line formed by the equation 16x � 2y = 4?
Click here to see answer by stanbon(75887)

Question 316578: write a rule for the linear function whose graph has a slope m= -1/3 and a y-intercept b=-2
Click here to see answer by moshiz08(60)

Question 316578: write a rule for the linear function whose graph has a slope m= -1/3 and a y-intercept b=-2
Click here to see answer by CharlesG2(834)

Question 316578: write a rule for the linear function whose graph has a slope m= -1/3 and a y-intercept b=-2
Click here to see answer by solver91311(24713)

Question 315640: The line is perpendicular to x-5y=4 and passes through the point (-1,1)
Click here to see answer by moshiz08(60)

Question 315645: graph an equation of the form y = mx + b
y = -x -1
Click here to see answer by moshiz08(60)

Question 316611: what is is the value of x and y in the simultaneous equation 2x+2y=4
3x+3y=6
Click here to see answer by Fombitz(32388)

Question 316663: I am doing a summer packet and I need an example of how to do a specific group of questions the question is asking me to find the slope of each line. 15+3y=4x once i get an example of how to do one of the problems i will be okay to do the rest of them. please help me i really need it.
Click here to see answer by Fombitz(32388)

Question 316665: I need an example of how to do a group of problems. They are asking me to write the slope-intercept form of the eqation of the line through the given point with the given slope an example of a problem is
through:(-4,-3), slope= 5\4
once i see how to do one of them i will be able to do the rest please help me.
Click here to see answer by Fombitz(32388)

Question 316608: what is is the value of x and y in the simultaneous equation 2x+27=4
3x+3y=6
Click here to see answer by checkley77(12844)

Question 316725: hi. my name is brandie and i really need help in math.my question is how do i solve algebric eqations and how do you find the slop of a line im going to the tenth grade please elp
Click here to see answer by jim_thompson5910(35256)

Question 316075: Write equations for the vertical and horizontal lines passing through the point (0,2).
Click here to see answer by moshiz08(60)

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, 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, 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, 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