Question

Which ordered pairs lie on the graph represented by f(x)

Answer 1

f(x) = x² -3x + 4

A) Replacing with x = 0, we get:

f(0) = 0² -3(0) + 4 = 4

then, the pair (0,4) lies on the graph

B) Replacing with x = 2, we get:

f(2) = 2² -3(2) + 4 = 4 - 6 + 4 = 2

then, the pair (2,5) doesn't lie on the graph

C) Replacing with x = 5, we get:

f(5) = 5² -3(5) + 4 = 25 - 15 + 4 = 14

then, the pair (5,14) lies on the graph

D) Replacing with x = -1, we get:

f(-1) = (-1)² -3(-1) + 4 = 1 + 3 + 4 = 8

then, the pair (-1,6) doesn't lie on the graph