Absolute Value
What is the absolute value of − 7
7
What does magnitude refer to in mathematics?
The size or distance of a number from zero.
What is a rational number?
A number that can be written as a fraction (a/b, where b ≠ 0).
What is a coordinate?
A pair of numbers that shows a point’s position on a graph (x, y).
What is the main function of the digestive system?
To break down food and absorb nutrients.
A submarine is 30 meters below sea level. What is the absolute value of its position?
30
What is the magnitude of the number –5?
5
Is 3/4 a rational number? Why or why not?
Yes, because it’s a fraction of two integers.
What is the coordinate of the point located at (3,4)?
(3,4) Quardrant 2
Name one organ involved in the circulatory system.
Heart, arteries, or veins.
How do you find the absolute value of a number on a number line?
By measuring its distance from 0.
How is magnitude different from absolute value?
Magnitude is a general term for size; absolute value is specifically distance from 0 on the number line.
Give an example of a rational number that is also an integer.
5 (or any integer, since 5 = 5/1).
How do you plot the point at (–2,5) on a graph?
Move left 2 on the x-axis, then up 5 on the y-axis.
How does the respiratory system help the body?
By taking in oxygen and removing carbon dioxide.
True or False: The absolute value of 0 is 0.
True
If a number has a magnitude of 12, what could the number be?
12 or –12
Are all integers rational numbers? Explain your answer.
Yes, because every integer can be written as a fraction with denominator 1.
Describe the x-axis and y-axis in a coordinate plane.
The x-axis is horizontal, the y-axis is vertical.
What is the role of the nervous system?
To send and receive signals that control the body.
Explain how absolute value applies to real-world situations, such as temperature.
It shows how far a value is from zero, like being 10° below or above zero still means a difference of 10 degrees.
Provide an example of a situation where you would need to consider the magnitude of a number.
Measuring the strength of an earthquake or the charge of an electric particle.
Find the sum of 2/3 and 1/6.
5/6
If you move from point (2,3) to (2,–1), how many units do you move?
4 units down.
Explain how the body systems work together during exercise.
The respiratory brings oxygen, the circulatory carries it, the muscular system uses it, and the nervous system coordinates movement.