What is the solution to the system of equations below? y=-3x-9 and y=1/3x-39 a. (9, -36)
b. (9,0)
c. (-9, 18)
d. (-9, -42)​

What is the percent of increase for a population that changed from 438,000 to 561,000

Write an algebraic expression for the word expression the quotient of c and 8

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?