Why do equivalent ratios form a straight line when graphed? Explain.

Which expression is equivalent to 2x^2+2x-4/2x^2-4x+2

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Prove the converse of the pythagorean theorem using similar triangles. the converse of the pythagorean theorem states that when the sum of the squares of the lengths of the legs of the triangle equals the squares length of the hypotenuse, the triangle is a right triangle. be sure to create and name the appropriate geometric figures.