Bell Ringer Dec. 2-6: Writing Equations

Front

What is the expression for the total cost (y) after x months if a gym membership costs $20 per month plus a one-time registration fee of $50?

Back

y = 20x + 50

Front

Which equation represents the total cost (y) for x miles if a taxi service charges a flat fee of $5 plus $2 per mile?

Back

y = 5 + 2x

Front

What is the equation representing a man descending from 100 feet at a rate of 30 feet per minute?

Back

y = 100 - 30x

Front

What is the equation for the total cost (y) of a holiday meal for x people if it costs $12.50 per person plus a delivery fee of $30?

Back

y = 30 + 12.50x

Front

What is the equation of the linear function that has a slope of 3 and a y-intercept of 16?

Back

y = 3x + 16

Front

Define a linear equation.

Back

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 rate of change of y with respect to x; it indicates how steep the line is.

Front

What does the y-intercept (b) represent in a linear equation?

Back

The value of y when x is 0; it is the point where the line crosses the y-axis.

Front

How do you find the total cost of a service that has a fixed fee and a variable fee per unit?

Back

Add the fixed fee to the product of the variable fee per unit and the number of units.

Front

What is the formula for calculating the total cost (y) of a service with a fixed cost (f) and a variable cost (v) per unit (x)?

Back

y = f + vx.