Question

What type of transformation transforms (a, b) to ​(−a, b)​?

a reflection over the y-axis
a reflection over the , y, -axis

a translation of 1 unit up
a translation of 1 unit up

a reflection over the x-axis
a reflection over the , x, -axis

a translation of 1 unit dow

Answer 1

The x coordinate changes sign and the y coordinate stays the same so it is a reflection over the y axis.