The line passing through which two points is parallel to the line x-2y = 16?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

How to solve a simultaneous equation involved with fractions?

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′?