Consumer Math Midterm

Front

What is the equation of a line in slope-intercept form?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you calculate sales tax on a purchase?

Back

Multiply the purchase price by the tax rate (in decimal form).

Front

What is the y-intercept of the equation y = 2x + 5?

Back

5, which is the value of y when x = 0.

Front

What does the slope of a line represent?

Back

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

Front

What is the formula to find the y-intercept from a linear equation?

Back

Set x = 0 in the equation and solve for y.

Front

If a = b + c, how do you solve for b?

Back

b = a - c.

Front

What is the definition of a vertical line?

Back

A vertical line has an undefined slope and is represented by the equation x = a constant.

Front

How do you convert a percentage to a decimal?

Back

Divide the percentage by 100.

Front

What is the formula for calculating the total cost including tax?

Back

Total Cost = Purchase Price + (Purchase Price × Tax Rate).

Front

What does the term 'horizontal' refer to in graphing?

Back

Horizontal refers to the x-axis, which runs left to right.