Question

what is the x intercept of the equation -3y=7x-21?

Answer 1

x = 3  → (3, 0)

to find the x- intercept let y = 0 in the equation

7x - 21 = 0

add 21 to both sides

7x = 21

divide both sides by 7

x = $\frac{21}{7}$ = 3 → x- intercept