##### Notes

This printable supports Common Core Mathematics Standard HSF-IF.A.2

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## Function Notation

1.
$f(x)=2x+5$ is equivalent to which of the following functions?
1. $y=2x+5$
2. $x=2x+5$
3. This is not a function.
4. $8=2x+5$
2.
Which of the following shows $y=3x-2$ expressed with function notation?
1. $x=3x-2$
2. $y=3x-2$
3. $f(x)=3x-2$
4. This is not a function.
3.
The function $f(x)=3x+4y^2-6$ can also be expressed in which of the following forms?
1. $y(x) = 3x+4y^2-6$
2. $y=3x+4y^2-6$
3. $x=3x+4y^2-6$
4. This is not a function.
4.
The function $f(x)=15y^2+8$ can also be expressed in which of the following forms?
1. This is not a function.
2. $x=15y^2+8$
3. $15y^2=8$
4. $f(y)=15x^2+8$
5.
Which of the following shows $t=23r-4r+6$ expressed with function notation?
1. $f(t)=23r-4r+6$
2. $f(r)=19r+6$
3. $f(t)=19r+6$
4. This is not a function.
6.
$f(p)=6p-3$ is equivalent to which of the following?
1. $f(x)=6p-3$
2. $p=6p-3$
3. $t=6p-3$
4. This is not a function.
7.
Which of the following shows $y=1/2x^2+2$ expressed with function notation?
1. $f(x)=1/2x^2+2$
2. $f(y)=1/2x^2+2$
3. $x=1/2x^2+2$
4. This is not a function.
8.
Which of the following shows $8=x^2+y^2$ expressed as y as a function of x?
1. $f(x)=x^2+y^2$
2. This is not a function.
3. $f(y)=x^2+y^2$
4. $f(x,y)=x^2+y^2$
9.
Which of the following shows $y=-x$ expressed with function notation?
1. $f(x)=-x$
2. $f(y)=-x$
3. This is not a function.
4. $f(-x)=x$
10.
$f(y)=-x^2+2$ is equivalent to which of the following?
1. $y=-x^2+2$
2. This is not a function.
3. $x=-x^2+2$
4. $y=x^2+2$
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