FINAL EXAM Unit 2B

Front

What does it mean for two lines to be parallel?

Back

Two lines are parallel if they have the same slope and will never intersect.

Front

What is the slope of parallel lines?

Back

The slopes of parallel lines are the same.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot.

Front

Why might a line not be considered a line of best fit?

Back

A line may not be a line of best fit if it does not go through the middle of the data set.

Front

If bags of apples cost $2 each and bags of oranges cost $6 each, how can you represent the total cost in an equation?

Back

The total cost can be represented by the equation: 2x + 6y = total cost.

Front

How do you determine the number of bags of oranges you can buy if you know the number of bags of apples?

Back

Substitute the number of bags of apples into the equation and solve for the number of bags of oranges.

Front

What type of association does a scatter plot show if the points trend downwards from left to right?

Back

A negative linear association.

Front

What is the definition of a slope in mathematics?

Back

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

Front

What are opposite reciprocals in relation to slopes?

Back

Opposite reciprocals are two numbers whose product is -1, indicating that the lines are perpendicular.

Front

What does it mean if two lines are perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.