The equation x = -7y^2 describes a parabola. Which way does the parabola
open?

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

Use the formulas a = x 2 – y 2, b = 2xy, c = x 2 + y 2 to answer this question. one leg of a right triangle has length 11 and all sides are whole numbers. find the lengths of the other two sides. the other leg = a0 and the hypotenuse = a1

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11