Mrs.J_ 7.74A &7.7A practice 7-unit test prepare

Front

What is the constant of proportionality in the relationship between cost and weight for grapes if 3 pounds cost $6.57?

Back

The constant of proportionality is 2.19.

Front

What is the constant of proportionality that relates total cost in dollars to the number of tickets purchased if the cost per ticket is $0.25?

Back

The constant of proportionality is 0.25.

Front

Write the equation for the relationship between y and x if y is three times x.

Back

y = 3x.

Front

Which equation best represents the relationship between x and y if the graph shows a line with a slope of 2 and a y-intercept of 4?

Back

y = 2x + 4.

Front

What does the constant of proportionality represent in a proportional relationship?

Back

It represents the ratio of the dependent variable to the independent variable.

Front

If the cost of 5 pounds of apples is $10, what is the constant of proportionality?

Back

The constant of proportionality is 2.

Front

How do you find the constant of proportionality from a table of values?

Back

Divide the total cost by the number of items for any pair of values.

Front

What is the formula for a proportional relationship?

Back

y = kx, where k is the constant of proportionality.

Front

If y = 4x, what is the constant of proportionality?

Back

The constant of proportionality is 4.

Front

What does a slope of 1/2 indicate in a linear equation?

Back

For every 2 units increase in x, y increases by 1 unit.