Chapter 4 Math Review

Which of the following graphs have an UNDEFINED slope? (Choose 1 only)

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• 
• 
• 

Tags

CCSS.8.EE.B.5

Find the slope of the line.

* Points are at (2,2) and (-1,-2)

• $\frac{4}{3}$

• $-\frac{3}{4}$

• $-\frac{4}{3}$

• $\frac{3}{4}$

Tags

CCSS.8.EE.B.5

The equation of a line is y = 4x-3. Identify the equation of a line parallel to this line. 

• $y=\frac{1}{4\ }x\ -3$

• $-4x\ +y=7$

• $y+3=-4x$

•  $y=-\frac{1}{4}x+3$  

The equation of a line is y = 2x + 5. Identify the equation of a line perpendicular to this.

• $y=2x-10$

• $y=-2x\ -6$

• $y=-\frac{1}{2}x\ +7$

• $y=\frac{1}{2}x\ +5$

 $y+10\ =\ -\frac{2}{3}x$  

Find the slope and the y-intercept of the following linear equation.

•  $m=-\frac{2}{3}\ \ \ \ \ \ \ \ b=10$  

•  $m=\frac{2}{3}\ \ \ \ \ \ \ \ b=10$  

•  $m=-\frac{2}{3}\ \ \ \ \ \ \ b=-10$  

•  $m=-10\ \ \ \ \ \ \ \ b=-\frac{2}{3}$  

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

 $-6x\ +2y=24$  

Identify the x and y-intercepts of the equation.

• x-int = -4      y-int = 12

• x-int = 12      y-int = -4

• x-int = -6      y-int = 2

• x-int = 2      y-int = -6

 $5x+y=25$  

Identify the x and y-intercepts of the equation.

• x-int = 1      y-int = 5

• x-int = 5      y-int = 1

• x-int = 25      y-int = 5

• x-int = 5      y-int = 25

Which proportional relationship has the greatest rate of change?

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• $y=2x$

• 
• The value of y increases by 9 for every increase of 3 in the value of x.

Tags

CCSS.8.EE.B.5

Which equation represents the line shown on the coordinate plane below?

• $y=4x+3$

• $y=-\frac{1}{4}x\ -3$

• $y=-4x-3$

• $y=\frac{1}{4}x\ +3$

At a factory, the cost of making different numbers of toothbrushes is shown in the table below. A linear function models the cost based on the number of toothbrushes made. Which statement about the rate of change of this function is true?

• The cost increases by $1.50 for each additional toothbrush made.

• The cost increases by $0.50 for each additional toothbrush made.

• The cost increases by $1.00 for each additional toothbrush made.

• The cost increases by $2.50 for each additional toothbrush made.

Tags

CCSS.HSF-LE.A.1B