Question

Which of the following is a point on the graph as described by the function
y = (2x+1)^2 − 4?
A. (1, 2)
B. (-1, 5)
C. (-1, -3)
D. (0, -2)

Answer 1

C. Plug in x = -1: y = (2(-1)+1)^2 − 4 = (−2+1)^2 − 4 = (−1)^2 − 4 = 1 − 4 = −3, so (-1, −3) is on the graph.