How do you graph y=3x2?

1 Answer
Jun 13, 2015

This is a straight line of slope 3 which intercepts the y axis at (0,2) and the x axis at (23,0)

Explanation:

Equations of the form:

y=mx+c

are the equations of lines in slope-intercept form, where m is the slope of the line and c is the intercept with the y axis.

In your example, slope m=3 and intercept c=2.

We can also determine where the line intersects the x axis by solving for x in the case y=0 ...

If 3x2=0 then 3x=2 and x=23

graph{3x-2 [-10, 10, -5, 5]}