For the following system, if you isolated x in the second equation to use the subsition method, what expression would you subsitute into the first equation? 2x + y = 8
-x - 3y = -12

A. 3y + 12
B. -3y + 12
C. 3y - 12
D. -3y - 12​

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′?

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b.false