Question

7x-2y=42.

Can someone help explain thoroughly how to find the x and y intercepts in problems like this?

Answer 1

Maybe this link can help you http://cs.selu.edu/~rbyrd/math/intercept/

Answer 2

i can give you an example...

suppose you have 5x + 4y = 20

to find x-intercept let y = 0 then solve for x

so when y = 0

5x + 4(0) = 20

5x = 20

x = 20/5

x = 4

so x-intercept is (4,0)

to find y-intercept let x = 0

when x = 0

5(0) + 4y = 20

4y = 20

y = 20/4

y = 5

so y-intercept is (0,5)

does that help?

Answer 3

If i did it like that it would be

7x - 2(0) = 42

X = 6.

And 7(0) - 2y = 42 would be

y = - 21.

So it would be: (6,0) and (0,-21)

Answer 4

that's right!

Answer 5

Thanks. :)

Answer 6

welcome