Which ordered pairs from the replacement set are solutions to the equation?
y = -2x + 9 ; Replacement Set {((-1, 11), (0, 8), (1, 7), (2, 5)}
Answer

(-1, 11)

(0, 8)

(1, 7)

(2, 5)

Question

Which ordered pairs from the replacement set are solutions to the equation?
y = -2x + 9 ; Replacement Set {((-1, 11), (0, 8), (1, 7), (2, 5)}
Answer
		
(-1, 11)
		
(0, 8)
		
(1, 7)
		
(2, 5)

mathstudent55 · Answer

Take an ordered pair; let's start with the first one: (-1,11)
Plug the x-value of the ordered pair (-1) into the x of the equation:
y = -2x + 9
y = -2(-1) + 9 =2 + 9 = 11
You get y = 11. Since this ordered pair has 11 as its y value, it is a solution to the equation.
Now try the other ordered pairs the same way.