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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)
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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)

User Sebak
by
5.1k points

1 Answer

2 votes

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)
User John Lock
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5.0k points
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