Solve this quadratic equation by completing the square. x2 4x = 15

Part a: select all of the ordered pairs that are located on the graph of the equation. part b: does the graph of the equation represent a function? select all correct answers for part a and one answer for part b.

Solve the system of equations. y= 2x y= x^2 - 15

Find the difference (8ab+a+2) - (3ab+6)