Algebra 2 question matrices. Please help!!
Solve the system of equations below using matrices.

For the equations below which statement is true ? -2x=14 6x=-42

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′?

The sum of a number and 5 times the number is 18.find the number