Function 3

Function f(x)=a(x-r)(x-s) the graph of the function has x-intercept at (-4, 0) and (2, 0) and passes through the point (-2,-8). Find constant a, r, s.

Correct answer:

a =  1
r =  -4
s =  2

Step-by-step explanation:

f(x)=a(xr)(xs) r=4 s=2  8=a (2r) (2s) 8=a (2(4)) (22)  8a=8  a=88=1  a=1
s=2  f(x) = (x+4)(x2)

Did you find an error or inaccuracy? Feel free to write us. Thank you!

Tips for related online calculators
Are you looking for help with calculating roots of a quadratic equation?
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: