Question

the graph and the table show the high temperatures in a city over a 10 - day period.

a. what was the high temperature on day 7?

b. on which day(s) was the high temperature 61 degrees fahrenheit?

c. is the high temperature a function of the day? explain how you know.

d. is the day a function of the high temperature? explain how you know.

Explanation:

Part a

Step1: Find Day 7 in the table

Look at the table, find the row for "high temperature (°F)" and the column for Day 7.

Step2: Read the temperature value

From the table, the high temperature on Day 7 is 60 °F.

Step1: Scan the temperature column

Look at the "high temperature (°F)" row in the table.

Step2: Identify days with 61 °F

Find the columns where the temperature is 61 °F. The corresponding days are Day 2, Day 4, and Day 6.

A relation is a function if each input (day) has exactly one output (high temperature). For each day (1 - 10), there is only one high temperature value. So, high temperature is a function of the day.

Answer:

60 °F

Part b