Question

i'm in 7th grade, and in algebra 1.1
i need to understand how to to find the x-intercept and y-intercept out of equations like this:
3x-3y=9

Answer 1

For x-intercept

y=0

For y-intercept

x=0

Answer 2

but i need to understand how to do it because i have to show my work

Answer 3

The x intercept is any point that is ON the x axis.

Answer 4

Yes put y=0 and get x-intercept

Answer 5

Put x=0 and get y-intercept.

Answer 6

To be ON the x axis, every variable other than x must be 0.

Answer 7

In this case, the only other variable is y.

Answer 8

i don't need to graph it just find out the x and y-intercepts

Answer 9

Who said anything about graphing?

Answer 10

lol

Answer 11

well someone said "To be ON the x axis, every variable other than x must be 0."

Answer 12

That doesn't mean you have to graph it. It just means you need to be able to visualize the graph to understand what the x intercept IS.

Answer 13

The concept of the x intercept exists because of graphing.

Answer 14

well i literally need step by step directions on how to solve the problem

Answer 15

These are all x intercepts.
Notice that in every case, y = 0.

This is why @hba 's method works.