Fall Semester Exam Part 1

Front

What does it mean for a person's pay to be directly proportional to the number of hours worked?

Back

It means that as the number of hours worked increases, the pay increases at a constant rate.

Front

If Shawn earns $123 for 20 hours of work, how much does he earn per hour?

Back

Shawn earns $6.15 per hour ($123 ÷ 20 hours).

Front

How do you calculate pay for a different number of hours worked if pay is directly proportional?

Back

Use the formula: Pay = (Hourly Rate) × (Number of Hours).

Front

What is the slope of parallel lines?

Back

Parallel lines have the same slope.

Front

What is the equation of a line in slope-intercept form?

Back

The equation is y = mx + b, where m is the slope and b is the y-intercept.

Front

If $70 is earned in 5 hours, how much is earned in 1 hour?

Back

$14 per hour ($70 ÷ 5 hours).

Front

What is the total pay for 22 hours of work if the hourly rate is $14?

Back

$308 ($14 × 22 hours).

Front

What does it mean when two lines intersect at a right angle?

Back

It means the lines are perpendicular to each other.

Front

If Erin is 3 years younger than twice Alex's age, how can we express Erin's age in terms of Alex's age?

Back

If y is Alex's age, then Erin's age x can be expressed as x = 2y - 3.

Front

What is the combined age of Erin and Alex if their ages add up to 33?

Back

x + y = 33, where x is Erin's age and y is Alex's age.