Difference between revisions of "2014 CEMC Gauss (Grade 8) Problems/Problem 15"

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{{CEMC box|year=2014|competition=Gauss (Grade 8)|num-b=14|num-a=16}}

Latest revision as of 12:37, 18 October 2025

Problem

The point $A(1,2)$ is reflected in the y-axis


An image is supposed to go here. You can help us out by creating one and editing it in. Thanks.


The new coordinates are

$\text{ (A) }\ (1, 2) \qquad\text{ (B) }\ (-1, 2) \qquad\text{ (C) }\ (-1, -2) \qquad\text{ (D) }\ (1, -2) \qquad\text{ (E) }\ (1, -1)$

Solution

Flipping over the y-axis would result in the x coordinate being negated. However, the y coordinate would remain the same.

Thus, the new coordinates would be $\boxed {\textbf {(B) } (-1, 2)}$

~anabel.disher

2014 CEMC Gauss (Grade 8) (ProblemsAnswer KeyResources)
Preceded by
Problem 14
Followed by
Problem 16
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CEMC Gauss (Grade 8)