8th grade review

Which graph represents a linear function of x?

• 
• 
• 
• 

Rectangle A'B'C'D' is similar to rectangle ABCD. What transformations were used to get these similar shapes?

• a translation 8 units to the left, then a dilation by a scale factor of 1/2 with a center of dilation at the origin

• a reflection over the y-axis, then a dilation by a scale factor of 1/2 with a center of dilation at the origin

• a dilation by a scale factor of 1/2 with a center of dilation at the origin, then a 90 degree counterclockwise rotation about the origin

• a 90 degree counterclockwise rotation about the origin, then a dilation by a scale factor of 1/2 with a center of dilation at the origin

Which proportional relationship has the greatest rate of change?

• y=7x

• 
• The value of y increases by 12 and the value of x increases by 4

• 

Which set of ordered pairs does NOT represent a function?

• {(0,2),(2,4),(4,6),(6,8)}

• {(-1,-3),(-8,-9),(-6,-4),(0,-3)}

• {(-3,5),(-6,5),(-9,5),(-12,5)}

• {(9,4),(2,0),(2,-4),(9,-8)}

A function has the following properties:

-Increasing and linear between -5 and -3

-Constant between -3 and 0

-Decreasing and linear between 0 and 3

-Increasing and nonlinear between 3 and 5

Which graph below would show this?

• 
• 
• 
• 

Triangle F and triangle G are shown. Which sequence does NOT transform triangle F to triangle G?

• A 180 degree rotation clockwise

• A 180 degree rotation counter-clockwise

• A reflection over the x-axis and a reflection over the y-axis

• A reflection over the y-axis and a 90 degree rotation clockwise

 $2^2\times2^n=\left(2^3\right)^4$  

What value of n would make the following equations true?

• 5

• 6

• 10

• 12

The object was made by placing a cone on top of a cylinder. The base of the cone is congruent to the base of the cylinder. What is the volume, in cubic centimeters, of the figure?

• $32\pi$

• $40\pi$

• $44\pi$

• $128\pi$

 $2x+3y=6\ and\ x-3y=9$  What is the solution to the system of equations?

•  $\left(-1,\frac{8}{3}\right)$  

•  $\left(-3,-4\right)$  

•  $\left(5,-\frac{4}{3}\right)$  

•  $\left(8,-\frac{1}{3}\right)$  

 $\left(4.5\times10^2\right)+\left(6.0\times10^3\right)$  Which expression is equivalent to this expressions?

•  $1.05\times10^6$  

•  $2.7\times10^6$  

•  $6.45\times10^3$  

•  $10.5\times10^5$