Question

Which transformation would transform the shaded figure onto the unshaded figure?

On a coordinate plane, a triangle is enlarged to form another triangle.
a reflection over the x-axis
a dilation
a reflection over the y-axis
a horizontal translation

Answer 1

A dilation.

An enlargement is a dilation (scaling) — it changes the size but preserves shape and angles. Reflections and translations preserve size, so they can't produce an enlarged triangle.