7
QuizMultiple Choice

Parabolas — Quiz

Question 7 • Integrated Math II CR SUSD (EX)

A parabola has a vertex at open paren 0 comma 0 close paren The equation for the directrix of the parabola is x is equal to negative 4 In which direction does the parabola open?

Answer
A
down
B
left
C
right
D
up

Explanation

The directrix is the vertical line x = −4, which lies to the left of the vertex at (0, 0). A parabola opens toward its focus, on the opposite side of the vertex from its directrix, so it opens to the right. The correct choice is right.

AI-written and checked against the verified answer.

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