A concave up parabola passes through the point 0 3 From this

A concave up parabola passes through the point (0, 3). From this information, what do you know about the parameters of y = ax² + bx + c?

Solution

parabola is concave up , so a is positive

y = ax² + bx + c passes through (0,3)

=>3 = a*0² + b*0 + c

=>c=3

from the given imformation we conclude that a is positive , c =3