Which description is represented by a discrete graph

The axis of symmetry for the graph of the function f(x)=1/4^2+bx +10 is x=6. what is the value of b?

Aprojectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t. after how many seconds does the projectile take to reach its maximum height?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?