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1 point Let y = 3x – 15.  If x = 6, find the value of y.

1 point Change 70 mi/h to km/s.  [Hint: 1 h = 60 min; 1 min = 60 s; 1 mi = 1.61 km]   Round your answer to the thousandth place.

1 point Find the slope of the line passing through points (3, 2), (4, 7). [Hint:

1 point How many significant digits are in 59.83 m?

1 point Change 6.5 km to meters (m). [Hint: 1 km = 1000 m]

2 point The equation of a line is 4y = -12x -20.  Find the slope, m, and the y-intercept, b. [Hint: Rearrange the equation in the form of , where m is the slope and b is the y-intercept.]

2 point Find the equation of the line with the given slope and y intercept. [Hint: ] m = (2/7),   b = -4

2 point The equation of a line is 3y = -6x -12.  Find the slope, m, and the y-intercept, b. [Hint: Rearrange the equation in the form of , where m is the slope and b is the y-intercept.]

1 point Change 85,000 cm2 to m2.  [Hint: 1 m = 100 cm] 

1 point Determine whether the lines given by the equation are parallel, perpendicular, or neither. [Hint: Rearrange the equations in the form of  and . If , the lines are parallel; if