Originally Posted by

**asdf51** Hi,

I am having some (major) problems trying to rearrange an equation which defines a line on a graph- which Excel produced. They are in the format y=(-ax^2)+bx. I am trying to rearrange the equation to give x=.....

The two equations are as follows.

y= -0.4615x^2+29.381x in other words y = (-0.4615*x^2) + (29.381*x)

y= -0.7565x^2+41.689x in other words y= (-0.7565*x^2) + (41.689*x)

Unfortunately, my ability does not extend beyond putting the brackets in, and despite numerous attempts, I cannot work out how to calculate x.

If anyone is able to help, it would be fantastic!

Thanks