Question

Write an equation of the parabola in intercept form that passes through (-2, 0.05) with x-intercepts of -7 and -3

Answer 1

1/100(x+7)(x+3)

Explanation:

Point: (-2 , 0.05) X intercepts: -7 and -3

Format: y = a( x + x-intercept )( x + x-intercept )

0.05 = a( -2 + 7 )( -2 + 3 )

0.05 = a( 5 )( 1 )

0.05 = 5a

0.05/5 x 100 = 5/500 = 1/100

a = 1/100

1/100(x+7)(x+3)