Precal Quiz 1.2-1.3

Determine if the given relation is a function and the reason why.

• no because the y's  repeat

• no because the x's repeat

• yes because the x's don't repeat

• yes because the y's don't repeat

Determine if the given relation represents a function and the reason why.

• no, because the x's repeat

• no, because the y's repeat

• yes, because the x's don't repeat

• yes, because the y's don't repeat

 $For\ g\left(x\right)=x^2+5\ ,\ g\left(3\right)=$  

• 11

• 14

• 12

• 13

 $For\ g\left(x\right)=x^2+5,\ \ g\left(-4\right)=$  

• 14

• -3

• 13

• 21

  $For\ g\left(x\right)=x^2+5,\ g\left(t+2\right)=$  

•  $t^2+4t+9$  

•  $t^2+8t+5$  

•  $t^2+9t+4$  

•  $t^2+8t+9$  

Use the piecewise function to evaluate f(4)

• 3

• -3

• 5

• -5

Use the piecewise function to evaluate f(2)

• 3

• -3

• 5

• -5

Use the given piecewise to evaluate f(-3)

• 1

• -11

• -4

• 3

 $f\left(x\right)=2x^2-6x+5$  

For the above equation, graph it on desmos.com and find the domain.

•  $\left(1,\ \infty\right)$  

•  $\left(0,\ \infty\right)$  

•  $\left(-\infty,\ 0\right)$  

•  $\left(-\infty,\ \infty\right)$  

 $\sqrt{2x-4}$  
For the above equation, graph it on desmos.com and find the domain.

•  $\left(0,\infty\right)$  

•  $\left(-\infty,\infty\right)$  

•  $\left(2,\ \infty\right)$  

•   $\left[2,\ \infty\right)$