Question

6.
Which of the following is the graph of the equation y = −2x2 − 3x + 4?

Answer 1

From the looks of the graph, it looks like the answer will be Letter C. (The last graph).

Explanation:

Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Direction: Opens Down

Vertex: ( − 3 /4 , 41 /8 )

Focus: ( − 3 /4 , 5 )

Axis of Symmetry: x = − 3 /4

Directrix: y = 21 /4

x y

− 3 − 5

− 2 2

− 3 4

41 8

0 4

1 − 1