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Question

Match the following quadratic expressions with it's y intercepts.

A
2
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B
0
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C
9
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D
1
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Solution

For any quadratic expression y=f(x)=ax2+bx+c, the y intercept is given as the value of f(0).
Using this, let's find out the y intercepts for the given quadratic expressions.
A.y=f(x)=3x24x+2
It's y intercept will be f(0)=2

B.y=f(x)=(4x1)(2x+1)
It's y intercept will be f(0)=(4×01)(2×0+1)=1

C.y=f(x)=(4x3)2
It's y intercept will be f(0)=(4×03)2=9

D.y=f(x)=(2x+3)2+9
It's y intercept will be f(0)=(2×0+3)2+9=0

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