What is the name of the point that you use to define a parabola

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Mr. and mrs. wallace have decided to buy a car for $21,600. they finance $15,000 of it with a 5-year auto loan at 2.9% arp. what will be their monthly payment be? a. $268.20 b. $268.86 c. $269.54 d. $387.16 i need !

What is the measure of angle x? answer