Problem 139 of 7
Correct the average-rate error in From (1,3) to (5,19), average rate is (5-1)/(19-3)=1/4.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
catch endpoint, subtraction, interval, and unit mistakes.
Hidden until you reveal it.
Bad work must contain a calculation, endpoint, interval, or interpretation mistake.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify the endpoints and requested interval.
2. Apply change in output over change in input.
3. Correct the arithmetic or interpretation.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Generic 'slope error' without identifying the wrong ratio or interval.