Unit 1 Statistics and Functions in Context

Front

What does the y-intercept represent in the equation Y = 3.5 + 1.1x?

Back

The initial cost at $3.50.

Front

How much ice cream was sold if the temperature was 22 degrees?

Back

15 sold.

Front

Will the question 'What class period has the most students?' make a scatterplot?

Back

No.

Front

Will the question 'How does temperature affect blanket sales?' make a scatterplot?

Back

Yes.

Front

What does the slope represent in the equation Y = -151.3x + 2,345?

Back

The crew ate 151.3 per day.

Front

What is a scatterplot?

Back

A graph that shows the relationship between two variables.

Front

What does the slope of a line indicate in a graph?

Back

The rate of change between the two variables.

Front

What is the formula for calculating the slope of a line?

Back

Slope (m) = (y2 - y1) / (x2 - x1).

Front

What does a positive slope indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative slope indicate?

Back

As one variable increases, the other variable decreases.