The coordinates of two vertices of a rectangle are (3, 7) and (-4, 7). If the rectangle has a perimeter of 30 units, what are the possible coordinates of its other two vertices? Select all that apply.
(3, -1) and (-4, -1)
(3, -7) and (4, - 7)
(3, 15) and (-4, 15)
(3, 15) and (4, 15)

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.

42

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)