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

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Question 638878: Use the method of substitution to solve the system of linear equations.
3x-y=5
7x-2y=13
Click here to see answer by reviewermath(524)

Question 638890: write the equation of the line in standard form. Has a slope of 8 and passes through the point (2,3)
Click here to see answer by reviewermath(524)

Question 638896: Use method of substitution to solve the system of linear equations.
4a=6-b
4a=2-b
Click here to see answer by reviewermath(524)

Question 639007: find the slope of line containing pairs of points (-6,-10) (-12,-11)
Click here to see answer by jim_thompson5910(28595)

Question 639009: find the equation of th linee going through (7,9) & (6,2)
Click here to see answer by jim_thompson5910(28595)

Question 639028: Is x+(x/y)=7 a linear equation?
Click here to see answer by jim_thompson5910(28595)

Question 639107: Graph the solution & use interval notaion for the solution:
-10/7_
Click here to see answer by solver91311(16885)

Question 639102: solve and write the answer in interval notation
7/9x > -6
Click here to see answer by Tatiana_Stebko(1326)

Question 639165: How do I write an inequality sign on this site. Thanks for the help.
Click here to see answer by Tatiana_Stebko(1326)

Question 639161: given the linear equation y=-1/2x+5 find the y- coordinatesof the points (-6,),(-2, ), and (8, )

Click here to see answer by Tatiana_Stebko(1326)

Question 639259: 3x-7y=2 solve for y.
Click here to see answer by reviewermath(524)

Question 639300: please help me write the slope-intercept equation
so far I did y-6=7/9(x+5)
Click here to see answer by Alan3354(30993)

Question 639306: please help me write a slope-intercept for
I tried doing y-6=7/9(x+5)
Click here to see answer by Alan3354(30993)

Question 639329: solve for y
3x-y=-x+8
identify the slope, x and y intercepts and graph
Click here to see answer by reviewermath(524)

Question 639424: 4x+2y=-8
2x-4=-16
Click here to see answer by sachi(392)

Question 639518: Use the Gauss-Jordan method to solve each system equation.
x = 1 - y
2x = z
2z = -2 - y
Click here to see answer by MathLover1(6632)

Question 639553: Find the equation of the line that passes through (5,0) and has a slope of -2/3 (Points : 5)
y = -2/3x - 10/3
3y - 2x = 10
2x + 3y = 10
y = -2/3x + 5
Click here to see answer by Tatiana_Stebko(1326)

Question 639567: My teacher was asking us to find the slope of the lines described. The question was "The line with X intercept 3 and y intercept -2." How do I find this?
Click here to see answer by stanbon(57347)

Question 639730: Which of the following is not true for the equation y = x + 5 ?
a) when x is 7
b) (3,2) is a soultion
c) when the independent varibale is -1, the dependent varibale is 4
d) the output is 6 for an input of 1
Click here to see answer by MathLover1(6632)

Question 639853: Write a slope intercept equation for a line that passes through (-1,-3) and (-2,5) please show me the steps to get the answer so I can learn how to do this thank you
Click here to see answer by lwsshak3(6505)

Question 639851: write slope intercept equation for the line that passes through (-7,6) and is perpendicular to -7x+9y=-2. Please show work so I can understand how it is done thank you.
Click here to see answer by lwsshak3(6505)

Question 639800: help me solve this equation, 12y - 3x = 7
Click here to see answer by neatmath(300)

Question 639935: which of the following statements is true?
a. a vertical line need not have a y-intercept
b. a horizontal line need not have a y-intercept
c. a line with positive slope need not cross the x-axis
d. a line with negative slope need not cross the x-axis
Click here to see answer by aquyu214(10)

Question 639914: graph each straight line by plotting any two points on the line y=-4x-1/2
Click here to see answer by Alan3354(30993)

Question 639975: Prove that 1+1=4
Click here to see answer by Edwin McCravy(8909)

Question 639981: A scientist is studying the number of a certain type of bird in his state. He is sure that the number of birds is related to the number of green slugs found in the area which is the birds' favorite prey. After counting both slugs and birds in several areas he finds a linear relationship: Number of birds = 0.0035 X (number of slugs). What does the slope of the line equal?
Click here to see answer by josmiceli(9678)

Question 640126: write the equations in slope-intercept form for the line that contains the given point and is (a) parallel and (b) perpendicular to the given line.
(5,0); x-3y=6
(3,-1); x-y=4
(0,-1/2); 2x-3y=12
Click here to see answer by solver91311(16885)

Question 640214: Find the slope if it exists of the line containing the pair of points. (1,-2) and (1,-9)

Click here to see answer by reviewermath(524)

Question 640351: I need to solve each equation for the indicated variable. Can someone help me by showing how they got the answer? I`m solving for R.
PV=nRT
Click here to see answer by Edwin McCravy(8909)

Question 640388: I need to have this in standard form please

The line with a slope of 3/5 and passing through the origin
Click here to see answer by sachi(392)

Question 640395: i need in standard form pleasee
the horizontal line through (5,-7)
Click here to see answer by sachi(392)

Question 640392: Solve simaltaneously for x and y: 2x-3y=-8 and 3x+4y=39

Click here to see answer by sachi(392)

Question 640462: Find the slope intercept form of the equation of the line that passes through these points: (-8,1) (-8,7)
Click here to see answer by solver91311(16885)

Question 640464: Find the general form of the equation of the line that passes through the given point and has an indicated slope.
Point: (6,-1)
Slope: m is undefined (slope is undefined)
Click here to see answer by solver91311(16885)

Question 640619: Give the slope of each line and then determine whether the two lines are parallel, perpendicular, or neither.
5x+2y=4
3x+7y=0
Click here to see answer by solver91311(16885)

Question 640623: The directions read: Graph the following lines using any technique
The problem reads 2x = 3y
Click here to see answer by reviewermath(524)

Question 640666: f(x)=5x-4 graph totally dont know where to start
Click here to see answer by reviewermath(524)

Question 640673: Give the slope of each line and then determine whether they are parallel, perpendicular, or neither.
2x+3y=3
5x+7y=0
Click here to see answer by reviewermath(524)

Question 640715: find the equation (in terms of x) of the line through the points (-5,2) and (2,1)
Click here to see answer by reviewermath(524)

Question 640730: Please help me solve this,I am having a terrible time understanding this concept paired with actually graphing it...Thanks in advance!
Graph the linear equation by solving for y first;
4x + 5y = -15
Click here to see answer by ankor@dixie-net.com(15652)

Question 640878: Find the slope, if it exists of the line containing the pair of points.
1. (3,0) and (0,-9)
2. (-9,-11) and (-12,-20)
Click here to see answer by Alan3354(30993)

Question 640878: Find the slope, if it exists of the line containing the pair of points.
1. (3,0) and (0,-9)
2. (-9,-11) and (-12,-20)
Click here to see answer by solver91311(16885)

Question 640879: Find the slope-intercept equation of the line that has the given characteristics.
Slope -4 and y-intercept (0,6)
Click here to see answer by Alan3354(30993)

Question 640950: what is a if the lines with equations y=ax+5 and 2y=(a+4)x-1 are parallel?
Click here to see answer by nerdybill(6958)

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