SOLUTION: Hello, I need help with graphing, I get so frustrated. 1. Graph the linear equations in two variables. y=-8x-3 2. Graph the linear equation. y=7 3. Find the slope of the

Algebra ->  Equations -> SOLUTION: Hello, I need help with graphing, I get so frustrated. 1. Graph the linear equations in two variables. y=-8x-3 2. Graph the linear equation. y=7 3. Find the slope of the      Log On


   



Question 105249: Hello, I need help with graphing, I get so frustrated.
1. Graph the linear equations in two variables.
y=-8x-3
2. Graph the linear equation.
y=7
3. Find the slope of the line passing through the pair of points or state that the slope is undefined.
(-2,2) and (7,-4)
Please Help

Answer by elima(1433) About Me  (Show Source):
You can put this solution on YOUR website!
For the first one, you choose the values for x and solve for y;
1. Graph the linear equations in two variables.
y=-8x-3
x=1
y=-8(1)-3
y=-8-3
y=-11
point #1(1,-11)
x=-1
y=-8(-1)-3
y=8-3
y=5
#2(-1,5)
x=(0)
y=-8(0)-3
y=0-3
y=-3
#3(0,-3)
Now graph those points:
graph+%28500%2C500%2C+-5%2C5%2C-13%2C5%2C+-8x-3%29
2. Graph the linear equation.
y=7
I am unable to graph this for you, but it is a horizontal line running thru7 on the y-axis
3. Find the slope of the line passing through the pair of points or state that the slope is undefined.
(-2,2) and (7,-4)
point-slope from;
m=%28y2-y1%29%2F%28x2-x1%29
m=%28-4-2%29%2F%287-%28-2%29%29
m=-6%2F9
slope+=+-6%2F9
:)