The line y = 4x-7 is a tangent to a parabola that has a y-intercept of -3 and the line x=1/2 as its axis of symmetry. Find the equation of the parabola.
This is supposed to be done with regards to the discriminant.
The Attempt at a Solution
y-intercept = -7
x-intercept = 7/4
after drawing the graph, the parabola has to be concave up.
integrating... (i have no idea what else to do)
discriminant = 49-4*2c