Test Review Tools of Algebra

Which answers could you cross out immediately because they identified the slope or y-intercept incorrectly?

• A

• B

• C

• D

• -4

• -2

• 2

• 4

• 6

Mark and Mindy each sell an anti-aging cream. Mark claims that his product can reverse the effects of aging, whereas Mindy claims that her product will prevent aging. Mindy sells her product for $12 per jar, and Mark requires a one-time membership fee of $60 and then sells each jar for $4. How many jars of anti-aging cream must you purchase before Mark's business model supersedes Mindy's sales strategy? Identify ALL of the tools and strategies that would effectively allow you to resolve this problem.

• Create an equation for each person's prices

• Create a system of equations for the prices of each person

• Create a table of values showing the total cost based on the number of jars purchased from each person

• Create a set of graphs showing the total cost based on the number of jars purchased from each person

• Use your freshly fallen tears to smudge the words of the scenario into an indiscernible mess

What is the slope of a line perpendicular to the line y = 2x − 3 ?

What slope is perpendicular to:

m = -3

• -3

• -1/3

• 1/3

• 3

Write the equation in slope-intercept form:
-10x + 2y = 14

• y = 10x + 12

• y = 10x + 7

• y = 5x + 14

• y = 5x + 7

Put the equation in slope-intercept form:
5x - y = 16

• -y = 5x + 16

• y = 5x + 16

• x = 5y - 16

• y = 5x - 16

Put the equation in slope-intercept form:
2x - 4y = 8

• y = 1/2x - 2

• y = 2x + 2

What type of slope?

• undefined

• positive slope

• negative slope

• zero slope

What is the slope of the line with the equation y = 4x + 12

• 4

• 1/4

• -4

• -1/4