Which equation represents circle C?
C(-4,1) P(5,-8)
a.(x − 4)2 + (y + 1)2 = 9
b.(x − 4)2 + (y + 1)2 = 81
c.(x − 4)2 + (y + 1)2 = 162
d.(x + 4)2 + (y − 1)2 = 81
e.(x + 4)2 + (y − 1)2 = 162

the answer to the expression is 83

a

step-by-step explanation:

the answer is a

probably the last option

step-by-step explanation:

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)