Cumulative Test Chapters 1, 3 &, 4

Front

What is the constant of proportionality in the equation y = kx?

Back

The constant of proportionality (k) is the ratio of y to x in a direct variation. For example, in y = 15x, k = 15.

Front

What does it mean for a relationship to be a direct variation?

Back

A relationship is a direct variation if it can be expressed in the form y = kx, where k is a non-zero constant.

Front

Calculate: 44 ÷ -4 = ?

Back

-11

Front

Calculate: -20 ÷ 5 = ?

Back

-4

Front

What is the result of 6 3/4 - 4 1/4?

Back

2 1/2

Front

How do you determine if a table represents a direct variation?

Back

A table represents a direct variation if the ratio of y to x is constant for all pairs of values.

Front

What is the formula for finding the constant of proportionality from a table?

Back

The constant of proportionality (k) can be found by dividing y by x for any pair of values in the table.

Front

If y = 15x, what is the value of y when x = 2?

Back

y = 15 * 2 = 30.

Front

What is the definition of a negative number?

Back

A negative number is a number that is less than zero, represented with a minus sign (-).

Front

What is the result of adding two negative numbers?

Back

The result is always a negative number.