Unit 3 Review

Which of the equations describes the relationship between the values of x and y shown in the table?

• y=1/3x+2

• y=1/2x+1

• y=2/3x+1

• y=4/3x−7

Lisa also has a jar containing 2 pennies. She will add 4 rather than 2 pennies to it each day. Which graph shows the x and y relationship described above with respect to Lisa’s jar?

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Which table contains ordered pairs that are located on the graph of the function?

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Paul and Jamie are making necklaces to sell at a craft fair. The tools and other start-up materials cost $12.50. There is an additional cost of $3.25 per necklace. Which equation can be used to find the total cost, c, of making a certain number of necklaces, n?

• c = 3.25n

• c = 12.50n

• c = 12.50+3.25n

• c = 3.25+12.50n

A local telephone company has hired Trevor to help deliver phone books. He will be paid $5.00 for the day plus $0.35 for each phone book he delivers. Which equation could be used to find his total pay (T) for the day if he delivers (b) phone books?

• T = $5.00+0.35

• $5.00 = T+0.35b

• T = $5.00b+0.35b

• T = $5.00+0.35b

Which representation corresponds to the equation y = 3x + 1?

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Which line on the coordinate plane has a slope of 0?

• 1

• 2

• 3

• 4

What is the slope and y-intercept of the graph?

• slope: 2

  y-intercept:4

• slope: -2

  y-intercept:-4

• slope: -1/2

  y-intercept: 4

• slope: 1/2

  y-intercept: 4

Which equation represents a line that has a slope of 7 and a y-intercept of  8?

• y = 8x + 7

• y = 7x + 8

• y = 7x - 8

• y= 8x - 7

Which of the following represent relations that are functions?

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