Question

What are the coordinates of D’

Answer 1

Answer:

(-2,-1)

Step-by-step explanation:

Reflection across the x-axis is: $(x,y)\rightarrow(x,-y)$

We need to multiply the y-value of the pre-image by negative one to get reflected across the x-axis.

1 * -1 = -1

So:

$(-2,1)\rightarrow(-2,-1)$

D' should be (-2,-1).