Question

what does it mean by reflect the triangle over x=-2

Answer 1

what does a reflection do?

Answer 2

It flips over a line

Answer 3

correct, so flip it over the vertical line that is marked at x=-2

Answer 4

spose we had a point (-6,3)

move it to add 2 to the x parts to move it and flip about the x=-2+2 axis

(-4,3), now flip

(4,3), now move it back again by shifting it to the x=0-2

(2,3)

or do you know how to determine a midpoint?

Answer 5

(x1 + x2)/2 = -2

(-6 + x2)/2 = -2

-6 + x2 = -4

x2 = 2

Answer 6

Still don't get it

Answer 7

the distance from the line x=-2 remains the same after you flip it ....

Answer 8

therefore -2 is the middle point between your required x points