Unit Test Review

Unit Test Review

Linear Equations & Functions

Multiple Choice

Which set of ordered pairs (x, y) could represent a linear function of x?

• (-2,8) (0,4) (2,3) (4,2)

• (1,2) (1,3) (1,4) (1,5)

• (-2,7) (0,12) (2,17) (4,22)

• (3,5) (4,7) (3,9) (5,11)

Multiple Choice

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

• The cost increases by $4.50 for each additional toothbrush made.

• The cost increases by $9.00 for each additional 3 toothbrushes made.

• The cost increases by $18.00 for each additional 3 toothbrushes made.

Multiple Choice

Find the slope of the line that contains (10,-1) and (-8,6).

• 2/5

• -7/18

• -18/7

• 5/2

Multiple Choice

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

• $y\ =\ 4x$

• $y\ =\ -4x$
  

• $y\ =\ \frac{1}{4}x$

• $y\ =\ -\frac{1}{4}x$

Fill in the Blank

Write an equation for a trend line of the data shown on the graph. You must identify the value for slope, the y-intercept and create the equation of the line. (use scrap paper to complete your work)

Unit Test: Linear Equations & Functions

• linear equation (y = mx + b)

• slope (m) = $\frac{y_2\ -\ y_1}{x_{2\ }-\ x_1}\$  

• y-intercept 

• linear functions