How would i solve y=8x+5 and y=4x+21?

x = 4

Step-by-step explanation:

Since both are equal to variable y, by deduction, the two equations are equal to each other. So we can set them equal to each other.

8x + 5 = 4x + 21

Now, we must get variables on one side and constants on the other. To do so, subtract 4x from both sides and 5 from both sides.

8x - 4x = 21 - 5

Combine like terms.

4x = 16

Now, divide both sides by 4 to isolate variable x.

4x / 4 = 16 / 4

x = 4

the anwser is d) 75°

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)