SOLUTION: graph the equations y = 3x and y = -3x on a linear graph.

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Question 247730: graph the equations y = 3x and y = -3x on a linear graph.
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!


Given: Equations y+=+3x%28EQN1%29 and y+=+-3x+%28EQN2%29

In EQN1,y=3x
let Fy=0: 0=3x --> x=0
y=1: 1=3x ---> x=1%2F3
y=2: 2=3x ---> x=2%2F3
y=3: 3=3x ---> x=3%2F3=1
y=-1: -1=3x ---> x=-1%2F3
y=-2: -2=3x ---> x=-2%2F3
y=-3: -3=3x ---> x=%28-3%2F3%29=-1
We see the points in the graph:


In EQN2, y=-3x
Let Fy=0: 0=-3x ---> x=0
y=1: 1=-3x ---> x=-1%2F3
y=2: 2=-3x ---> x=-2%2F3
y=3: 3=-3x ---> x=-3%2F3=-1
y=(-1): -1=-3x ---> x=1%2F3
y=(-2): -2=-3x ---> x=2%2F3
y=(-3): -3=-3x ---> x=%28-3%2F-3%29=1
We see the points:


Thank you,
Jojo