Mathematical Concepts and Problem Solving

This video tutorial introduces the concept of functions in mathematics, focusing on input-output relationships and function rules. It covers squaring numbers, converting measurements, and distinguishing between functions and non-functions. The tutorial includes examples and practice problems to reinforce understanding.

What is the result of squaring the number -3?

• -9

• 9

• 0

• 3

How many unique numbers are in the list after squaring: 1, -3, -2, 3, 2, 1/4, 0.5?

• 5

• 6

• 7

• 4

If a person is 5.5 feet tall, what is their height in inches?

• 72 inches

• 66 inches

• 60 inches

• 55 inches

What is the square of the number 5?

• 10

• 15

• 20

• 25

If the square of a number is 16, what could the original number be?

• 4

• -4

• Both 4 and -4

• Neither

A square has a perimeter of 12 cm. What is its area?

• 12 cm²

• 6 cm²

• 9 cm²

• 16 cm²

Is speed a function of time when running a 100-meter sprint?

• Depends on the runner

• Sometimes

• Yes

• No

If a test has 26 questions worth 123 points, with multiple-choice worth 3 points and essays worth 8 points, how many essay questions are there?

• 10

• 9

• 11

• 12

Which input-output table represents a valid function rule?

• Table A

• Table D

• Table B

• Table C