What does a graph look like if there is a proportional relationship?

What is the distance from zero if a quadratic function has a line of symmetry at x=-3 and a zero at 4

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

Margaret is purchasing a house for $210,000 with a 15 year fixed rate mortgage at 4.75% interest she has made a 5% down payment the house is valued at 205,000 and the local tax rate is 3.5% homeowners insurance 600 per year what are her total monthly payment