Write quadratic functions given three points in a plane

1. Find the equation for the following parabola using a linear system (see pic 1)

A) Write the three equations using three ordered pairs

EQ 1:

EQ 2:

EQ 3:

B) Write the linear system

C) Solve the system using substitution and then elimination. Show all work and steps:

D) List the three parameter values: a=___ b=___ c=___

E) Write the quadratic equation