jacobileelee jacobileelee

18-06-2018
Mathematics

contestada

What is the y intercept of the quadratic function f(x)=(x-8)(x+3)
A) (8,0)
B) (0,3)
C) (0,-24)
D) (-5,0)

Respuesta :

19-06-2018

[tex]f(x)=ax^2+bx+c\\\\\text{The y-intercept}\ (0;\ c)\\\\f(x)=(x-8)(x+3)=(x)(x)+(x)(3)-(8)(x)-(8)(3)\\\\=x^2+3x-8x-24=x^2-5x-24\\\\Answer:\ C)\ (0;\ -24)[/tex]

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