How do you write a quadratic function in intercept form whose graph has x intercepts -3, -2 and passes through (-4, -6)?

1 Answer
Jul 25, 2017

The quadratic equation in intercept form is #y=-3(x+3)(x+2)#.

Explanation:

The quadratic equation in intercept form is #y=a(x-p)(x-q)#

where #p=-3 and q=-2# are x -intercepts . So The quadratic

equation in intercept form is #y=a(x+3)(x+2)#. The parabola

passes through #(-4,-6)# , which will satisfy the equation of

parabola. #:. -6 = a ( -4+3)(-4+2) or -6 = 2a # or

#a = -3 #. Hence the quadratic equation in intercept form is

#y=-3(x+3)(x+2)#.

graph{-3(x+3)(x+2) [-10, 10, -5, 5]} [Ans]