1, I cannot fail this if I do I have a F in math!! Please make sure u know it’s correct I can’t do it alone.

One way of knowing the correct answers, we substitute the ordered pairs to the function and see whether it would make the function true.

3x – 4y = 21

A. (−3, 3)

3(-3) – 4(3) = 21

-21 = 21 > not equal

B. (−1, −6)

3(-1) – 4(-6) = 21

21 = 21 > equal

C. (7, 0)

3(7) – 4(0) = 21

21 = 21 > equal

D. (11, 3)

3(11) – 4(3) = 21

21 = 21 > equal

look a the sides they are perpendicular

160

step-by-step explanation:

idk

i hope i