Help please algebra thank you

The graph shows the amount of money noah earned based on the number of lawns he cut. which list shows the dependent quantities in the graph?

How is this equation completed? i cannot find any examples in the book.

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