Mathematics
Grade 9
15 min
Identify functions
Identify functions
What you'll learn
- Solve perimeter word problems involving rectangles and squares with given side lengths to find the total perimeter in centimeters or meters with 80% accuracy.
- Apply addition to find the missing side length of a rectangle when given the perimeter and the length of one side in at least 2 out of 3 word problems.
- Explain the steps used to solve a perimeter word problem to a partner, using terms like 'side,' 'length,' and 'add' at least once with 100% accuracy.
- Apply the correct unit of measurement (e.g., cm, m, inches) when stating the answer to a perimeter word problem.
Tutorial Preview
1
Is the relation {(1, 2), (2, 4), (3, 6)} a function?
2
Is this relation a function: 5 → A, 6 → B, 5 → C?
3
Does the graph of a circle represent a function?
Sample Practice Questions
Easy
Is the relation {(1, 5), (2, 10), (3, 15)} a function?
0.Yes
1.No
Easy
Is the relation {(0, 0), (1, 1), (0, 2)} a function?
0.Yes
1.No
Easy
A relation maps inputs to outputs: 1 → X, 2 → Y, 3 → Z. Is it a function?
0.Yes
1.No
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Frequently asked questions
What grade level is "Identify functions"?
Identify functions is a Grade 9 Mathematics lesson on ExcelOS.
What will I learn in Identify functions?
You'll be able to: Solve perimeter word problems involving rectangles and squares with given side lengths to find the total perimeter in centimeters or meters with 80% accuracy; Apply addition to find the missing side length of a rectangle when….
Is "Identify functions" free to practice?
Yes. You can read the tutorial preview for free, and signing up for a free ExcelOS account unlocks the full tutorial and all practice questions with instant feedback.
How many practice questions are included with Identify functions?
This lesson includes 25 practice questions across multiple difficulty levels, each with instant feedback and explanations.