7th Honors / 8th Grade Fall Semester Exam Review

Front

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

Back

The rate of rainfall is 2 cm per hour.

Front

What is the equation of a straight line with a slope of 1/2 and a y-intercept of -2?

Back

The equation is y = (½)x - 2.

Front

What is a function in mathematics?

Back

A function is a relation where each input has exactly one output.

Front

If a carton of eggs costs $2.25 and a package of bacon costs $4.25, how many packages of bacon can you buy if you want both stores to cost the same when buying one carton of eggs?

Back

You would need to buy 2 packages of bacon.

Front

What is the equation of a line with a slope of -2 and a y-intercept of 2?

Back

The equation is y = -2x + 2.

Front

Define slope in the context of a linear equation.

Back

Slope is the measure of the steepness of a line, calculated as the rise over run.

Front

What does it mean for a set of values to be a function?

Back

Each x-value must correspond to only one y-value.

Front

How do you determine if a relation is a function from a set of ordered pairs?

Back

Check if any x-value is repeated with different y-values.

Front

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

Back

The y-intercept is the value of y when x = 0, represented by b.

Front

What is the formula to calculate the cost of items in a store?

Back

Cost = (Price of item 1 * Quantity) + (Price of item 2 * Quantity).