20 which relation is a function? a. {(−2, 1), (−7, −1), (2,  8), (−7, −8)} b. {(−2, 2), (−7, 7), (−1,  1), (−8, 8)} c. {(−2, 1), (−2, 2), (−2,  7), (−2, 8)} d. {(1, −7), (2, −8), (−2,  7), (1, 8)}

(- 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 )

idk

step-by-step explanation: