Find the equation of the function.
A quadratic function with x-intercepts (1,0) and (-5,0) and y-intercept (0,-5)

Question

Find the equation of the function.
A quadratic function with x-intercepts (1,0) and (-5,0) and y-intercept (0,-5)

anonymous · Answer

@campbell_st

wolf1728 · Answer

The x intercepts help you to find the 2 solutions.
(x+1) (x-5)
x² -4x -5 = 0
So x =-1 and x=5
The minimum value is found when the derivative is equal to zero.
2x -4=0

So the minimum is at x=2 and 
y= 2² -4*2 -5
y=-9

wolf1728 · Answer

It seems you just need the equation and you'll just need the first 3 lines of my answer.

anonymous · Answer

I was just about to verify that!  Thanks for your help.

wolf1728 · Answer

u r welcome :-)