How do you find the intercepts for y=3x3?

1 Answer
Jul 2, 2015

To find the x-intercept, set y to zero and solve for x.
To find the y-intercept, set x to zero and solve for y.

Explanation:

y=3x3

X-Intercept

0=3x3

Add 3 to both sides.

3=3x

Divide both sides by 3.

1=x

Switch sides.

x=1

Y-Intercept

y=3(0)3

y=3

graph{y=3x-3 [-12.87, 12.44, -7.24, 5.42]}