Question

Determine the ordered pair that satisfies the equation, -5x + 3y = 7.

A) (2 , -1)
B) (-5 , 3)
C) (7 , 14)
D) (-2 ,−135)

Answer 1

Answer: It's -2 4/5

It said Enter your answer as a simplified fraction in the box, above me doesn't have a simplified fraction, therefore he or she is wrong.

Answer 2

C) (7 , 14)

Explanation:

Substitute each ordered pair into the equation

-5x + 3y = 7.

A) (2 , -1)

-5(2) +3(1) = -10 +3 = -7 this does not equal 7 so not true

B) (-5 , 3)

-5(-5) +3(3) = 25 +9 = 34 this does not equal 7 so not true

C) (7 , 14)

-5(7) + 3(14) = -35 + 42 = 7 this equals 7 so true

D) (-2 ,−135)

-5(-2) + 3(-135) =10+405 =415 this does not equal 7 so not true