SOLUTION: Find the x and y intercepts. Then graph each line. 1. y=2x 2. y=-2x 3. y=1/3x+1

Algebra ->  Conversion and Units of Measurement -> SOLUTION: Find the x and y intercepts. Then graph each line. 1. y=2x 2. y=-2x 3. y=1/3x+1      Log On


   



Question 664321: Find the x and y intercepts. Then graph each line.
1. y=2x
2. y=-2x
3. y=1/3x+1

Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

1. y=2x
set y=0 and find the x-intercept
0=2x
0=x....the x-intercept is at (0,0)
and set x=0 to find y-intercept
y=2%2A0
y=0....the y-intercept is at (0,0)
to graph this line we need one more point since the x-intercept and the y-intercept lie in same point

let x=1
y=2%2A1
y=2.....the point is at (1,2)

+graph%28+600%2C+600%2C+-10%2C10%2C+-10%2C+10%2C+2x%29+


2. y=-2x
set y=0 and find the x-intercept
0=-2x
0=x....the x-intercept is at (0,0)
and set x=0 to find y-intercept
y=-2%2A0
y=0....the y-intercept is at (0,0)
to graph this line we need one more point since the x-intercept and the y-intercept lie in same point

let x=1
y=-2%2A1
y=-2.....the point is at (1,-2)

+graph%28+600%2C+600%2C+-10%2C10%2C+-10%2C+10%2C+-2x%29+


3. y=%281%2F3%29x%2B1
set y=0 and find the x-intercept
0=%281%2F3%29x%2B1
-1=%281%2F3%29x
-3=x....the x-intercept is at (-3,0)
and set x=0 to find y-intercept
y=%281%2F3%29%2A0%2B1
y=1....the y-intercept is at (0,1)

+graph%28+600%2C+600%2C+-10%2C10%2C+-10%2C+10%2C+%281%2F3%29x%2B1%29+