Solve number 9 using quadratics

What is the slope of the line that contains the points (-2,1) and (0,-3)

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte

Simplify 1 divided by 2/3 x (-3) divided by 1/6 x (-10)