Question

Which image is a reflection of the black polygon in quadrant I?

On a coordinate plane, the black polygon is reflected across the y-axis to form the red polygon.
the black polygon in quadrant I
the red polygon in quadrant II
the blue polygon in quadrant III
the green polygon in quadrant IV
Mark this and return

Answer 1

The red polygon in quadrant II.
Reflection across the y‑axis sends (x,y) → (−x,y), moving a figure from quadrant I to quadrant II.