Functions Unit Test Review

Front

What does the y-intercept represent in a graph of a burning candle's height?

Back

The height before the candle started burning.

Front

Write the slope-intercept form of the equation for the points (0, -1) and (4, 4).

Back

y = 5/4x - 1

Front

What is the cost function for Pete’s Plumbing if they charge a flat fee of $28 and $35 per hour?

Back

C(x) = 28 + 35x, where x is the number of hours.

Front

What does it mean if an interval on a graph is described as 'decreasing, nonlinear'?

Back

The values are decreasing but not in a straight line.

Front

In a race, if runner B had a head start, what does that imply?

Back

Runner B began the race ahead of the other runners.

Front

What is a function in mathematics?

Back

A relation where each input has exactly one output.

Front

Define slope in the context of a linear function.

Back

The rate of change of the function, represented as rise over run.

Front

What is the significance of the slope-intercept form of a linear equation?

Back

It shows the slope and y-intercept, making it easy to graph.

Front

How do you determine if a function is linear?

Back

If it can be represented by a straight line on a graph.

Front

What does it mean for a function to be increasing?

Back

The output values rise as the input values increase.