Question

The coordinates of the vertices of quadrilateral ABCD are A(6, 7), B(4, 2), C(1, 5), and D(3, 8).

ABCD is reflected across the x-axis to form PQRS. What is the length of diagonal PR?

Square root of 37units

Square root of 19 units

Square root of 82units

Square root of 29 units

Answer 1

I'd really recommend you drawing a picture of this problem in the xy-plane, reflection across the x-axis is something very straightforward once you see the picture.

Answer 2

Oh okay!

Answer 3

If that doesn't help you let me show you one property of the reflection along the x-Axis.

Answer 4

Okay thanks!(: