Answer:
c = 2
Step-by-step explanation:
The points (- 3, 18 ) and (1, c ) lie on the graph and therefore make the equation true.
Substitute (- 3, 18 ) into the equation
18 = a(- 3)² = a × 9 = 9a ( divide both sides by 9 )
2 = a , then
y = 2x² ← is the equation of the parabola
Substitute (1, c ) into the equation
c = 2(1)² = 2 × 1 = 2
