20
practice examMultiple Choice

Practice Exam

Question 20 • Algebra I

Giselle graphs the function f of x is equal to x squared Robin graphs the function g of x is equal to negative x squared How does Robin’s graph relate to Giselle’s?

Answer
A
Robin’s graph is a translation of Giselle’s graph 1 unit down.
B
Robin’s graph is a translation of Giselle’s graph 1 unit left.
C
Robin’s graph is a reflection of Giselle’s graph over the x -axis.
D
Robin’s graph is a reflection of Giselle’s graph over the y -axis.

Explanation

For every x-value, Robin’s function g(x) = -x² is the opposite of Giselle’s f(x) = x². Changing every y-value to its opposite reflects a graph over the x-axis. So Robin’s graph is a reflection of Giselle’s graph over the x-axis.

AI-written and checked against the verified answer.

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