Question

the graph of a quadratic function has x intercepts -1 and 3 and a range consisting of all numbers less than or equal to 4. determine an expression for the function

Answer 1

how did u get

Answer 2

since the roots of quadratic function are -1 and 3
it can be factored as f(x) = (x+1)(x-3)

Answer 3

and it says range is <= 4. that means its upside down !

so the function is

f(x) = -(x+1)(x-3)