Fall Semester Exam Review

Front

What is direct proportionality?

Back

Direct proportionality means that as one quantity increases, another quantity increases at a constant rate. For example, if you earn $70 for 5 hours of work, your earnings are directly proportional to the hours worked.

Front

If $70 is earned in 5 hours, how much is earned in 22 hours?

Back

$308

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line. It can be expressed in the form f(x) = mx + b, where m is the slope and b is the y-intercept.

Front

Write the linear function for the cost of making greeting cards if it costs $0.75 per card and $4.50 for materials.

Back

f(x) = 0.75x + 4.50

Front

What is an arithmetic sequence?

Back

An arithmetic sequence is a sequence of numbers in which the difference between consecutive terms is constant. For example, {14, 22, 30, 38} is an arithmetic sequence with a common difference of 8.

Front

What does the domain of a function represent?

Back

The domain of a function represents all the possible input values (x-values) for which the function is defined.

Front

In the context of a gift card, what does the domain represent if it shows the number of purchases made?

Back

The domain represents the number of White Chocolate Mochas purchased.

Front

What is the slope of a line?

Back

The slope of a line is a measure of its steepness, calculated as the rise over run (change in y over change in x).

Front

Find the slope of a line parallel to y = -1/5 x + 4.

Back

-1/5

Front

What is a geometric sequence?

Back

A geometric sequence is a sequence of numbers where each term after the first is found by multiplying the previous term by a fixed, non-zero number called the common ratio.