Where's the Ordered Pair?

Where's the Ordered Pair?

Translate English language to Math language

An ordered pair is a set of numbers (x, y).

In the real world, when "x" is certain number, then "y" will be a certain number, depending upon on the situation.

If "x" is the variable for time, and "y" is the variable for how many laps I run, then (2, 1) might tell you that I ran 1 lap (y) in 2 minutes (x).

Multiple Choice

Choose the ordered pair that represents: "I ran 4 laps in 8.5 minutes"

• (4, 4)

• (8.5, 8.5)

• (8.5, 4)

An ordered pair is a set of numbers (x, y).

On the following slides, you will read math problems in English.

For each problem, select the TWO ordered pairs in Math language that match the situation.

Multiple Select

A climber is on a hike. After 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is the rate of change?

*Remember, you are selecting the TWO ordered pairs you would use to solve this problem.

• (2, 400)

• (6, 700)

• (2, 700)

• (6, 400)

• (2, 6)

Multiple Select

A scuba diver is 30 feet below the surface of the water 10 seconds after he entered the water and 100 feet below the surface after 40 seconds. What is the scuba diver's rate of change?

*Remember, you are selecting the TWO ordered pairs you would use to solve this problem.

• (30, 100)

• (10, 30)

• (10, 40)

• (40, 100)

• (10, 100)

Multiple Select

A rocket is 1 mile above the earth in 0.5 minutes and 5 miles above the earth in 2.5 minutes. What is the rocket's rate of change in miles per minute?

• (0.5, 1)

• (0.5, 5)

• (2.5, 1)

• (1, 5)

• (2.5, 5)

Multiple Select

Michaela started a savings account with $300. After 4 weeks, she had $350 dollars, and after 9 weeks, she had $400. What is the rate of change of money in her savings account per week?

• (4, 300)

• (350, 400)

• (4, 350)

• (9, 400)

• (9, 350)

Multiple Select

After 30 baseball games, Jesse had 25 hits. If after 100 games he had 80 hits, what is his average hits per baseball game?

• (30, 80)

• (30, 25)

• (25, 30)

• (100, 80)

• (25, 100)

Poll

Rate your ability to find the ordered pairs in a word problem:

• easy!

• okay if I take my time to read carefully

• confusing

Poll

Looking ahead: Do you know the difference between an independent variable and a dependent variable?

• dependent depends on independent

• independent depends on dependent

Poll

Looking ahead: Do you know which variable goes on the x-axis on a graph?

• dependent variable

• independent variable

We will learn more about variables very soon!

Please make sure you complete missing work!