Question

Now they want x intercept.. is that the slope part. for instance..
If 2x + y = 7, then the x-intercept of the graph of this equation is: -2x?

Answer 1

if you want the x intercept you just insert a zero for y.. so you get x = 7/2

Answer 2

Not quiet - At the x intercept the y point on your graph is 0
Change this to y=mx+b format and then make y = 0. :)

Answer 3

okay let me work it

Answer 4

You don't even have to put it into point-slope formula. You can just make y = 0.
When any line cuts the x axis the value for it is (x,0).

Answer 5

2x + y = 7 ===> let y=0 ===> 2x=7 ===> x=7/2

Answer 6

so 0 = -2x +7

-7 = -2x

so x = 7/2?

Answer 7

Correct.

Answer 8

exactly

Answer 9

ok now we're cookin

Answer 10

great