Chapter 3 Practice Test

Determine whether the relation is a function. If the relation is a function, determine whether the function is linear or nonlinear.  

• Function; Linear

• Not a Function

• Function; Non-Linear

Determine whether the relation is a function. If the relation is a function, determine whether the function is linear or nonlinear. 

 $y=4$  

• Function; Linear

• Function; Non-Linear

• Not a Function

Determine whether the relation is a function. If the relation is a function, determine whether the function is linear or nonlinear. 
 $5x-6y=30$  

• Function; Linear

• Function; Non-Linear

• Not a Function

Determine whether the relation is a function. If the relation is a function, determine whether the function is linear or nonlinear. 
 $\frac{7}{x}+y=-18$  

• Function; Linear

• Function; Non-Linear

• Not a Function

Find the domain and range of the function represented by the graph. Determine whether the domain is discrete or continuous.

• $D:All\ Reals\ \ R:y\ge-2$

• $D:All\ Reals\ \ R:y\ge0$

• $D:-2.5\le x\le2.5\ \ \ R:y\ge-2$

Find the domain and range of the function represented by the graph. Determine whether the domain is discrete or continuous.

• $D:-1,\ 0,\ 1,\ 4\ \ \ R:-2,-1,\ 0,\ 2$

• $D:-2,-1,\ 0,\ 2\ \ \ R:-1,\ 0,\ 1,\ 4$

• $D:All\ Reals\ \ R:All\ Reals$

Evaluate the function when x = −1, 0, and 4

 $g\left(x\right)=3x^2+1$  

•  $g\left(-1\right)=4\ ;\ g\left(0\right)=1\ ;\ g\left(4\right)=49$  

•  $g\left(-1\right)=5\ ;\ g\left(0\right)=0\ ;\ g\left(4\right)=145$  

•  $g\left(-1\right)=4\ ;\ g\left(0\right)=1\ ;\ g\left(4\right)=145$  

•  $g\left(-1\right)=4\ ;\ g\left(0\right)=0\ ;\ g\left(4\right)=49$  

 $a\left(x\right)=-3x-2$  

Evaluate the function when x = −1, 0, and 4

•  $a\left(-1\right)=1\ ;\ a\left(0\right)=-2\ ;\ a\left(4\right)=-14$  

•  $a\left(-1\right)=-5\ ;\ a\left(0\right)=-2\ ;\ a\left(4\right)=-12$  

•  $a\left(-1\right)=-5\ ;\ a\left(0\right)=-2\ ;\ a\left(4\right)=-14$  

•  $a\left(-1\right)=1\ ;\ a\left(0\right)=2\ ;\ a\left(4\right)=-14$  

 $2x+3y=12$  

Find the slope, x-intercept, and y-intercepts of the graph of the linear equation. 

• m=-2/3 ; x-int=6 ; y-int=4

• m=-2/3 ; x-int=4 ; y-int=6

• m=2/3 ; x-int=12 ; y-int=12

• m=-2/3 ; x-int=2 ; y-int=3

 $-3x+5y=-15$  

Find the slope, x-intercepts, and y-intercepts of the graph of the linear equation. 

• m=3/5 ; x-int=5 ; y-int= -3

• m=3/5 ; x-int= -5 ; y-int= -3

• m=-3/5 ; x-int= -3 ; y-int= 5

• m=3/5 ; x-int= -3 ; y-int= -5