Applying Linear Relations Unit Test Review

Suppose y varies directly as x. If y = 150 when x = 3, find y when x = 5.

• 0.1

• 90

• 153

• 250

Which of the following is NOT true about the line y = 2.

• The line has a slope of zero.

• The line is vertical.

• The line is perpendicular to the y-axis.

• The line is parallel to the x-axis.

Which of the following lines is PARALLEL to the graph of y = -6x + 3 and goes through the point (-1,4)?

• y=1/6x +25/6

• y = 1/6x + 4

• y = -6x - 2

• y = -6x + 4

Surveys show that as the number of hours spent studying increases the grades on student report cards increases. Is this association or causation?

• Positive Association; causation

• Positive Association;

  no causation

• Negative Association;

  causation

• Negative Association;

  no causation

Which function is best represented by the graph of g?

The linear parent function, f(x) = x, is transformed to g(x) = f(x + 3). Describe the transformation.

• g(x) is shifted up 3 units

• g(x) is shifted down 3 units

• g(x) is shifted left 3 units

• g(x) is shifted right 3 units

The number of miles Jim runs is directly proportional to the time spent running.

If he runs 6 miles in 46.8 minutes, how long will it take him to run 13.1 miles?

• 92.35 minutes

• 7.8 minutes

• 150.67 minutes

• 102.18 minutes

The graph above shows a line of best fit for data collected on the distance bicyclists have remaining in relation to the amount of time they have been riding.  What is the equation of the line of best fit?

• y = -25x + 170
• y = 25x + 170
• y = -(5/8) x + 170
• y = (5/8) x + 170

Write the equation of a line PERPENDICULAR to y = -2x + 1 that passes through the point (2, 3).

The table shows the attendance at a flag football game for the first 8 games of the season. Find the correlation coefficient and describe the association.

• r = .18; Strong Positive

• r = .18; Strong negative

• r = -.43; Weak Positive

• r = -.43: Weak Negative

• No correlation