Enlarge the triangle by scale factor - 2 with the centre of enlargement (6, 7)

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

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Match the equivalent expressions. x - 3y + 12 12 - 3y - 2x + x + 2x 3x + 2y - 2x + y + 12 3y + 12 3x + y - 12 4y + 3y + 3x - 6y - 10 - 2 x + 3y + 2x - 3x + 7 + 5 x + 3y + 12 5 + 2y + 7x - 4x + 3y - 17