Two-Variable Linear Inequalities — Unit test Answers

What is the equation of a line with a slope of –2 that passes through the point (6, 8)?

The graph shows the distance in miles of a runner over x hours. What is the average rate of speed over the interval [9, 11]?

What is the equation of the line perpendicular to that passes through the point (12, –6)?

A cashier earns $7 an hour. If x is the number of hours worked, which function represents the cashier’s earnings?

Lionel computed the average rate of change in the depth of a pool over a two-week interval to be zero. Which statement must be true?

The height in feet, h, of a model rocket t seconds after launch is given by the equation . The average rate of change in h(t) between t = 1 second and t = 3 second is 6. What does the average rate of change tell you about the rocket?

An amusement parks sells adult tickets for $18 each and youth tickets for $12 each. Kalila is using the inequality to find the combinations of tickets she can buy without exceeding her $250 budget. The ordered pair (4, 3) is a solution of the inequality. What does (4, 3) represent?

The cost of a taxi ride is a linear function of the distance traveled. If a 5-mile ride costs $12 and a 9-mile ride costs $14, which equation can be used to find the cost, c, for any distance, m, traveled?

The weight, w, in tons of a school bus is related linearly to its seating capacity, p. A 60-passenger bus weighs 10 tons, and an 84-passenger school bus weighs 13 tons. Which equation can be used to find the weight of a 50-passenger bus?