Question

.Which transformation does this rule describe?
(x,y)-->(-x,y)
options ;
a-reflection over the y-axis
b-rotation of 90 degrees counterclockwise
c-translation left 1 unit
d-reflection over the x-axis

Answer 1

Think about some arbitrary point, like this:


Where would (-x,y) (approximately) be with respect to (x,y)?

Answer 2

Just a little extra information I should've added.