Question

What is the rule for a reflection across the y axis?

Answer 1

The rule for reflecting over the x- axis is negate the value of the y coordinate of each point but leave the c value the same

Answer 2

When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is transformed into its opposite (its sign is changed). ... the line y = x is the point (y, x). The reflection of the point (x,y) across. the line y = -x is the point (-y, -x).

Explanation: