AP Precalculus Unit 1- 2A Review

Front

The slope can also be called...

Back

the rate of change.

Front

Calculate the average rate of change from 20 to 40 minutes.

Back

-2 gallons per minute.

Front

Assuming the scale is 1, where is f(x) > 0?

Back

(-4, -1) U (2, +oo).

Front

Over what intervals is the average rate of change decreasing?

Back

(-∞, 1).

Front

When is a function considered positive?

Back

When its y values are above the x-axis.

Front

What is the definition of slope in a linear function?

Back

The slope is the ratio of the rise (change in y) to the run (change in x).

Front

How do you calculate the average rate of change between two points?

Back

(f(b) - f(a)) / (b - a), where a and b are the x-values.

Front

What does it mean for a function to be increasing?

Back

A function is increasing if its output values (y-values) rise as the input values (x-values) increase.

Front

What is the significance of the x-axis in relation to function values?

Back

The x-axis represents the input values, and the function is positive when it is above this axis.

Front

What is the interval notation for all real numbers?

Back

(-∞, +∞).