Which of the following are ordered pairs for the equation y = -4x + 5? (0,5) (1,1) (-1,9) (0,5) (-1,-1) (-1,-9) (0,5) (1,-1) (-1,9) (0,5) (-1,1) (-1,-9)

Question

asked Oct 19, 2019 139k views

1 Answer

Inigo · Answer 1 · 2019-10-25T12:14:05+0000

(0, 5), (1, 1 ), ( - 1, 9 )

to test the points substitute the x-coordinate into the equation and if the value is equal to the y- coordinate then it is an ordered pair

(0, 5 ) → y = 0 + 5 = 5 ← ordered pair

(1, 1 ) → y = - 4 + 5 = 1 ← ordered pair

(- 1, 9 ) → y = 4 + 5 = 9 ← ordered pair

( - 1, - 1 ) → y = 4 + 5 = 9 ← not an ordered pair

( - 1, - 9 ) → y = 4 + 5 = 9 ← not an ordered pair

(1, - 1 ) → y = - 4 + 5 = 1 ← not an ordered pair

(- 1, 1 ) → y = 4 + 5 = 9 ← not an ordered pair