10/14 Graphing Linear Functions

The graph passes through points (-7,-4) and (7,6). What is the slope and y-intercept of the graph?

• m = 5/7

  b = -1

• m = 5/7

  b = 1

• m = 7/5

  b = -1

• m = 7/5

  b = 1

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A.3c

Which graph best represents the equation y = -4 (x + 3) -2?

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A.3c

Which graph best represents a linear function with a zero of -2 and a y-intercept of 6?

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A.3c

Linear function t has an x-intercept of -1 and a y-intercept of 5. Which graph best represents t?

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A.3c

The graph models the linear relationship between the number of monthly payments made on a loan and the remaining balance in dollars left to pay on the loan. Which statement best describes the x-intercept of the graph?

• The x-intercept is 60, which represents the initial balance in dollars of the loan.

• The x-intercept is 27,000, which represents the initial balance in dollars of the loan.

• The x-intercept is 60, which represents the number of monthly payments needed to repay the loan.

• The x-intercept is 27,000, which represents the number of monthly payments needed to repay the loan.

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A.3c

Which graph best represents -5y = -6x + 15?

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A.3c

The graph of a linear function passes through the point (1, -9) and has a slope of -3. What is the zero of this line?

• 2

• 4

• -6

• -2

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A.3c

The graph of linear function k passes through the points (-7, 0) and (1, 8). Which statement must be true?

• The slope of the graph is - 4/3

• The graph passes through the point (-1, -8)

• The zero of the graph is 7.

• The x-intercept is -7

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A.3c

The water level of a river was measured each day during a two week period. The graph models the relationship between the water level of the river in feet and the number of days the water level was measured. Which statement best describes the y-intercept of the graph?

• The water level increased by 0.25 ft/day

• The maximum water level was 19.5 ft.

• The initial water level was 16 ft.

• The water level was measured for 14 days.

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A.3c

A paper airplane was thrown from the top of a tall building. The height of the paper airplane above the ground can be found using the function y = -1.5x + 60, where x is the time in seconds the airplane had been in the air. How many seconds did it take the paper airplane to reach the ground?

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A.3c