Suppose that y varies directly with x, and y = 21 when x= -3. (a) Write a direct variation equation that relates x and y.

(b) Find
y
when x = -2.
y = ?

add an image

step-by-step explanation:

(- 1, 0 )

step-by-step explanation:

an x- intercept is where the function crosses the x- axis.

to find the x- intercept/s look for the value of x when f(x) = 0

from the given table there are 3 values of x where f(x) = 0

when x = - 1, x = 2, x = 3

the one that is listed is (- 1, 0 )