Question

100 Points!!

Activity
A submarine is at a depth of 100 feet below sea level. Then it starts to dive at a rate of 50 feet per minute. Use this information to answer the following questions.

Question 1
Part A
For this situation, what is the independent variable (include units)?

Part B
What is the dependent variable (include units)?

Part C
What is the slope of the line that models this situation?

Part D
What is the y-intercept of the line that models this situation?

Question 2
Write the equation of the line that models the situation using the slope and y-intercept found in parts C and D of question 1.

Answer 1

Independent variable: Time in minutes

Dependent variable: The elevation in feet

Slope: -50

Y-Intercept: -100

Explanation:

Just did the assignment

Answer 2

• See below.

Explanation:

The initial depth is 100 feet below sea level or 100 ft.

Diving rate is 50 feet per minute or 50 ft/min.

Question 1

Part A

The diving rate is the independent variable, which is:

• 50 ft/min

Part B

The depth at any point is the dependent variable, which is different after number of minutes, in ft.

Part C

• The slope is the diving rate in this situation.

Part D

• The initial depth is the y-intercept, the starting point.

Question 2

The equation of the line is:

• y = mx + b, substituting the values,

• y = 50x + 100