Use substitution to solve the linear system of equations.
x=4
-y=1/2x

(4, -2)
(-2, 4)
(4, 2)
(2, -4)

pls a$ap

Which graph represents an even function?

Write as a product: ac^2–ad+c^3–cd–bc^2+bd

20 points for the answer. this is for real , don't put random ! a rectangle has a length of 4 centimeters and a width of 7 centimeters. what is the effect on the perimeter when the dimensions are multiplied by 5? the perimeter is increased by a factor of 5. the perimeter is increased by a factor of 20. the perimeter is increased by a factor of 25. the perimeter is increased by a factor of 100.