Function Notation (Grades 11-12)

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Function Notation

1. 
[math]f(x)=2x+5[/math] is equivalent to
  1. [math]y=2x+5[/math]
  2. [math]x=2x+5[/math]
  3. This is not a function
  4. [math]8=2x+5[/math]
2. 
[math]y=3x-2[/math] expressed as a function is
  1. [math]x=3x-2[/math]
  2. [math]y=3x-2[/math]
  3. [math]f(x)=3x-2[/math]
  4. This is not a function
3. 
[math]f(x)=3x+4y-6[/math] can also be expressed as
  1. [math]y(x) = 3x+4y-6[/math]
  2. [math]y=3x+4y-6[/math]
  3. [math]x=3x+4y-6[/math]
  4. This is not a function
4. 
[math]f(x)=15y+8[/math] can also be expressed as
  1. This is not a function
  2. [math]x=15y+8[/math]
  3. [math]15y=8[/math]
  4. [math]f(y)=15x+8[/math]
5. 
[math]t=23r-4r+6[/math] expressed as a function is
  1. [math]f(t)=23r-4r+6[/math]
  2. [math]f(r)=19r+6[/math]
  3. [math]f(t)=19r+6[/math]
  4. This is not a function
6. 
[math]f(p)=6p-3[/math] is equivalent to
  1. [math]f(x)=6p-3[/math]
  2. [math]p=6p-3[/math]
  3. [math]t=6p-3[/math]
  4. This is not a function
7. 
[math]y=1/2x^2+2[/math] expressed as a function is
  1. [math]f(x)=1/2x^2+2[/math]
  2. [math]f(y)=1/2x^2+2[/math]
  3. [math]x=1/2x^2+2[/math]
  4. This is not a function
8. 
[math]8=x^2+y^2[/math] expressed as y as a function of x is
  1. [math]f(x)=x^2+y^2[/math]
  2. This is not a function
  3. [math]f(y)=x^2+y^2[/math]
  4. [math]f(x,y)=x^2+y^2[/math]
9. 
[math]y=-x[/math] expressed as a function is
  1. [math]f(x)=-x[/math]
  2. [math]f(y)=-x[/math]
  3. This is not a function
  4. [math]f(-x)=x[/math]
10. 
[math]f(y)=-x^2+2[/math] is equivalent to
  1. [math]y=-x^2+2[/math]
  2. This is not a function
  3. [math]x=-x^2+2[/math]
  4. [math]y=x^2+2[/math]

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