Question

Find the slope of the line and write the slope as a rate of change. Don't forget to attach the proper units. 9) The graph shows the total cost y (in dollars) of owning and operating a mini-van where x is the 9) number of miles driven. 4000 2625) 2000 5000 10000 15000 20000 25000 х A) $2.29 per mile C) $23.00 per mile B) 50.44 per mile D) cannot be determined Solve. 10) A section of roller coaster track has the dimensions shown in the diagram. Find the grade of the 10) track, which is the slope written as a percent. 10.73 meters 29 meters A) 10.73% B) 37% C) 3% D) 42% Find the unknown length in the right triangle. If necessary, approximate the length to the nearest thousandth. 7 cm 11 cm A) 13.038 cnm B) 8.485 cm C) 10.677cm D) 18 cm 12) 12) 11 cm 13 cm B) 24 cm C) 6.928 cm D) 12 cm A) 48 cm

Answer 1

Solution) Clearly the graph shows line that was given (x,y) coordinates

One point on graph line has (x1 , y1) coordinates (6000,2625)

Other point on graph line has (x2 , y2) coordinates (10000,4375)

Slope of this line = (y2 - y1)/(x2 - x1)

Slope = (4375 - 2625)/(10000 - 6000)

Slope = 0.4375

Approximately slope = 0.44

Slope = $0.44 per mile

$ per mile since $ is for y coordinate and mile for x coordinate

Option B is correct

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