Unit 4 Review 7. 4A,C. 7.7A

Front

What is the equation that represents the relationship between words typed (w) and minutes (m) if Nancy can type 50 words per minute?

Back

w = 50m

Front

Write the equation for the situation where y is the total cost and x is the number of items sold, with a rate of 19.25 per item.

Back

y = 19.25x

Front

If y represents the total cost and x represents the number of hours worked, what is the equation if the hourly rate is 22 and there is a flat fee of 60?

Back

y = 22x + 60

Front

What is the rate of rainfall if it falls at 2 cm per hour?

Back

2 cm per hour

Front

Define a linear equation.

Back

A linear equation is an equation that makes a straight line when graphed, typically in the form y = mx + b.

Front

What does the slope (m) represent in a linear equation?

Back

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

Front

What is the y-intercept in the equation y = mx + b?

Back

The y-intercept (b) is the value of y when x is 0.

Front

How do you find the total cost if the hourly rate is $40 and the number of hours worked is x?

Back

Total cost = 40x.

Front

What is the meaning of the term 'flat fee' in a service charge context?

Back

A flat fee is a fixed charge that does not change regardless of the amount of service provided.

Front

If a mechanic charges a flat fee of $60 and $40 per hour, what is the equation for the total cost (y) based on hours (x)?

Back

y = 40x + 60.