Between which two ordered pairs does the graph of f(x)=1/2x^2+x-9 cross the negative x-axis?

(-6,0) and (-5,0)
(-4,0) and (-3,0)
(-3,0) and (-2,0)
(-2,0) and (-1,0)

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