Question

–x + 3y = 9 what is the slope intercept form

Answer 1

1. Add x to both sides
2. Divide the whole expression by the coefficient of y, that is three in this case.
What do you get?

Answer 2

y=6x?

Answer 3

Adding x to both sides yields:
3y = x + 9

Dividing both sides of the equation by three yields:
y = (1/3)x + 3

There you have it, the slope is (1/3), and the y-intercept is 3