PLEASE HELP ME : A parabola opening up or down has vertex (0,0) and passes through (4,2). Write its
equation in vertex form.
Simplify any fractions.

Which system of linear inequalites is represented by the graph?

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

According to the number line, what is the distance between points a and b? v ++ + + + + -16 -14 -12 -10 -8 + 6 + 4 + -2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 o6 units o 7 units 12 units o 14 units