Question

Which choice shows the coordinates of C' if the trapezoid is reflected across the y-axis?

a) (-5,3)
b) (3,-5)
c) (5,-3)
d) (-3,5)

Answer 1

When a point is reflected across the y-axis, only the sign of its x-coordinate changes. Therefore, if the original point C had coordinates (3,5), after the reflection across the y-axis, the coordinates of point C' would be (-3,5).

Step-by-step explanation:

The question asks for the coordinates of point C' after a trapezoid is reflected across the y-axis in a coordinate system. To find C' after the reflection, you only change the sign of the x-coordinate of the original point C while keeping the y-coordinate the same. Therefore, if the original coordinates of C were (3,5), the reflected point C' across the y-axis would have coordinates (-3,5).