Is y=4 and x=8 perpendicular ??

yes

Step-by-step explanation:

y=4 is a horizontal line which crosses the y-axis at 4; slope is zero

x=8 is a vertical line which crosses the x-axis at 8; slope is undefined

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)

i don't know, but that looks pretty bad. my school passed us unless we failed in all the subjects, but idk abt ur school's rules.

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