Question

  Which ordered pairs in the form (x, y) are solutions to the equation   3x – 4y = 21?

Choose all answers that are correct
A.

(−3, 3)
B. (−1, −6)
C. (7, 0)
D. (11, 3)

Answer 1

B. (-1,-6) , C. (7,0) , D. (11,3)

Explanation:

I took the test

Answer 2

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