Is the function below below linear or non-linear y=-8x^2+9

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

How much orange juice do you need to make 2 servings of lemony orange slush?

Fa bus driver leaves her first stop by 7: 00 a.m., her route will take less than 37 minutes. if she leaves after 7: 00 a.m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?