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

Front

What is the equation that represents the relationship between the number of months (x) and the total fitness club membership (y) if the club starts with 80 members and increases by 15 members each month?

Back

y = 15x + 80

Front

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

Back

0.25

Front

What is the equation for the relationship if y = 0.5x + 14?

Back

y = 0.5x + 14

Front

Write the equation for a table where the relationship is y = 3x.

Back

y = 3x

Front

Is the relationship in the table proportional if the constant is 3?

Back

Yes; 3

Front

What does it mean for a relationship to be proportional?

Back

A relationship is proportional if it can be represented by a constant ratio between two quantities.

Front

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

Back

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

Front

What is the slope in the equation y = mx + b?

Back

The slope (m) represents the rate of change of y with respect to x.

Front

If a fitness club has 80 members and gains 15 members each month, how many members will it have after 4 months?

Back

80 + 15*4 = 80 + 60 = 140 members.

Front

What is the y-intercept in the equation y = 15x + 80?

Back

The y-intercept is 80, which is the initial number of members.