Question 897132
y=4x^2-16x+15
y = (2x-5)*(2x-3)
let x=0 y=15
let x=1 y=3
let x=2 y=-1
min{y = 4 x^2-16 x+15} = -1 at x = 2
parabola
focus | (2, -15/16)~~(2, -0.9375)
vertex | (2, -1)
semi-axis length | 1/16 = 0.0625
focal parameter | 1/8 = 0.125
eccentricity | 1
directrix | y = -17/16