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

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Question 262544: could you please help me solve:
if a*b=4a-2b, find x if x*5=3*4
Click here to see answer by drk(1908)

Question 262638: a person is going to an electric pole 60 m high.I n every minute he climbs 6m but slips 4m. how many minutes he will be able to touch the top of the pole
Click here to see answer by unlockmath(1688)

Question 262509: Could you help me find the x intercept, y intercept, and slope for this equation: x=-5
Click here to see answer by shiela mae(5)

Question 262509: Could you help me find the x intercept, y intercept, and slope for this equation: x=-5
Click here to see answer by PRMath(133)

Question 262509: Could you help me find the x intercept, y intercept, and slope for this equation: x=-5
Click here to see answer by Alan3354(69443)

Question 262695: Find an equation of the line that contains the point (1,0) and is perpendicular to 2x+y=4.
Click here to see answer by PRMath(133)

Question 262379: g(x)=x^2+1

evaluate this function at g(t^2)
Click here to see answer by drk(1908)

Question 262815: y=3x-5
y=x+3
Click here to see answer by mikej24(4)

Question 262806: Graph the line. y=-x-1
Click here to see answer by Alan3354(69443)

Question 262696: Graph on a plane y>-1
Click here to see answer by PRMath(133)

Question 262908: Find the value of k such that the graph of 4x = k -3y has a y- intercept of (0, -8)
Click here to see answer by dabanfield(803)

Question 262908: Find the value of k such that the graph of 4x = k -3y has a y- intercept of (0, -8)
Click here to see answer by richwmiller(17219)

Question 262908: Find the value of k such that the graph of 4x = k -3y has a y- intercept of (0, -8)
Click here to see answer by angphy(3)

Question 262926: I don't understand how to do this question:
Write the equation of the line that passes through the given point and is parallel to the given line. Give the answer in slope-intercept form. (-7,4) y+5x =-11
y=
thank you!

Click here to see answer by nerdybill(7384)

Question 263074: Given the pair of linear equations in two variables:
Find the x- and y-intercepts (if any) for each line. Show your work.
Plot those intercepts, and graph the two lines on the same chart. Submit your graph through the Dropbox.
Apply elimination or substitution to find the coordinates of the point of intersection (if there are no solutions or infinite solutions, state this). Show your work.
5x - 8y = 34
7x + 2y = 8

Here is how I did it, I just want to know if I did it correctly.
5x - 8y = 34
x = 0 5(0)-8y = 34
-8y/-8 = 34/-8 = 17/-2
y = 0 5x - 8(0) = 34
5x - 0 = 34
x = 34/5
7x + 2y = 8
x = 0 7(0) + 2y = 8
2y = 8
y = 4
y = 0 7x + 2(0) = 8
7x = 8
x = 8/7
I will use the elimination system to find the intersection.
5x - 8y = 34
28x + 8y = 32 I multiplied this by 4 to eliminiate y. Now I will add them.
33x = 66
x = 2
5(2) - 8y = 34
10 - 8y = 34
-8y = 24
y = -3
The intersection is (2,-3)

Click here to see answer by richwmiller(17219)

Question 263075: The perimeter of a rectangle is 72 m. If the width were doubled and the length were increased by 9 m, then the perimeter would be 114 m. What are the dimensions?
Click here to see answer by ankor@dixie-net.com(22740)

Question 263097: y=1-2X
Click here to see answer by Alan3354(69443)

Question 263057: find the slope and the y intercept of the line y=-6x-5
Click here to see answer by Alan3354(69443)

Question 263146: Find Three points on the line and graph: 2x + y = 6
Click here to see answer by oberobic(2304)

Question 263166: find equation of a line with slope and given point. m=-4, (4,8)
Click here to see answer by palanisamy(496)

Question 263166: find equation of a line with slope and given point. m=-4, (4,8)
Click here to see answer by oberobic(2304)

Question 263165: a ramp rises 2.9ft vertically and 10.7ft horizontally. Express the slope as a grade. The grade of the ramp is what percent?
Click here to see answer by drk(1908)

Question 263252: What is the y-intercept in the equation Y=.15x+.79
Click here to see answer by richwmiller(17219)

Question 263237: Find an equation of the line that has the same y-intercept as the line x - 3y = 6 and contains the point (5,-1).
Click here to see answer by Alan3354(69443)

Question 263324: How do i solve a system of equations by graphing such as
7x-7y=35
7x+7y=-35
Click here to see answer by richwmiller(17219)

Question 263320: find the slope and y intercept coordinate for the line with equation:16+2x-8y=0
Click here to see answer by Alan3354(69443)

Question 263329: graph and write the solution to the interval notation of
x<9 and x>is equal to -6

Click here to see answer by richwmiller(17219)

Question 263367: how do i use the the substitution method for 9m+n=24 m-3n=12
to find the ordered pairs.
Click here to see answer by angphy(3)

Question 263407: Solve the following system of linear equations. If possible, express your answer as an ordered pair (x,y). Also, tell whether the system of equations is �independent�, �inconsistent�, or �dependent�.
2x-4y=8
x-2y=4

Click here to see answer by drk(1908)

Question 263490: find an equation of the line having the given slope and containing the given point
m=8/9, (5, -4)
Click here to see answer by oberobic(2304)

Question 263514: Please help me solve the formula for the variable r: S=a/1-r
Click here to see answer by jim_thompson5910(35256)

Question 263569: combination 7x+4y=5
x-6y=-19
Click here to see answer by drk(1908)

Question 263569: combination 7x+4y=5
x-6y=-19
Click here to see answer by navin2010(3)

Question 263529: if the slope is 7 what is the coordinate of (x,8)and(4,1)
Click here to see answer by checkley77(12844)

Question 263615: find the indicated outputs for f(x) =4x squared -4x
f (0)=
f (-1)=
f (2)=
Click here to see answer by drk(1908)

Question 263617: Find the slope and the y-intercept
y=3x-2
The slope is ?
The y-intercept is (0,?)
5y + 2x + 8= 16+2x
Slope is?
y-intercept is 0,?
Click here to see answer by rfer(16322)

Question 263612: given the function of f described by f(x) =9x, find each of the following. f(-14),f(4), f(29)
Click here to see answer by rfer(16322)

Question 263713: find the equation of the parallel line to 6x + 3y=15 that passes through points (6,9. write in slope-intercept form.
Click here to see answer by palanisamy(496)

Question 263735: The sum of the measure of the first angle and one-fourth the second angle is 60.75
Click here to see answer by JBarnum(2146)

Question 263751: Given the pair of linear equations in two variables.
Find x and y intercepts for each line. Apply elimination or substitution to find the coordinates of the point of interception.
Problem:
9x - 4y = 8
5x + 3y = 41
Click here to see answer by JBarnum(2146)

Question 263754: 7.7r + 6=6.7r + 6
Click here to see answer by JBarnum(2146)

Question 263754: 7.7r + 6=6.7r + 6
Click here to see answer by unlockmath(1688)

Question 263758: Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution.
Problem:
Chuck and Dana agree to meet in Chicago for the weekend. Chuck travels 114 miles in the same time Dana travels 96 miles. If Chuck's rate of travel is 6mph more that Dana's, then at what rate does Chuck travels?
Click here to see answer by mananth(16946)

Question 263757: Translate the problem into a pair of linear equations in two variables.Solve the equations using either elimination or substitution.
Problem:
A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 7% cement should he mix with 10 bags of 15.5% cement to produce a mix containing 12% cement?
Click here to see answer by mananth(16946)

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