Evaluate Functions from Equations and Graphs

Evaluate the piecewise function at x = -1?

• -1

• -3

• -1/3

• 0

Is the function increasing or decreasing from 2 < x < 6?

• Increasing

• Decreasing

The graph shows the total distance, in feet, walked by a person as a function of time, in seconds.



​​​​​​Was the person walking faster between 20 and 40 seconds or between 80 and 100 seconds?

• 20 and 40 Seconds

• 80 and 100 Seconds

Arrange the qualitative description of the function.

• I, II, III

• I, II, IV

• II, I, III

• II, I, IV

Is the graph of the equation increasing or decreasing?

• Increasing

• Decreasing

• Neither

Akiko is painting a room in her house. The graph shows the area Akiko has painted as a function of time. Which description is correct?

• For the first 2 hours, Akiko paints very quickly at first, but then slows down

• For 2 < x < 3, Akiko paints at a constant rate

• For 3 < x < 4, Akiko continues painting at a varying rate

• For the last 2 hours, Akiko paints at a constant rate, but much more slowly than earlier in the day

What is the main topic of the lesson in the document?

• Solving equations

• Analyzing and sketching graphs

• Calculating averages

• Measuring distances

What is the domain of this graph?

• None of the above

Are the blue and red graphs inverse functions?

• Yes, the functions reflect over y = x

• No, they do not reflect over the x - axis.

• No way to tell from a graph

What does it mean to find the inverse of a function?

• the x's and y's are switched

• the x's and y's are divided by 2

• the x's and y's are made negative

• the x's and y's are the same