Identifying Functions
Grade 8th Grade · Math · 15 min
What's Included
Learning Objective
I can identify functions from graphs, tables, and other representations.
Warm-Up Video
Get Sum Math · 6:08
GED Math – Determine Functions!
Guided Notes
3 key concepts
- 1
In a function, each input (x-value) should produce only one output (y-value), like a vending machine that dispenses the same item each time you press the same button.
- 2
If a vertical line drawn on a graph intersects the graph at more than one point, then the graph does not represent a function.
- 3
To keep a table a function, if an x-value repeats, it must have the same y-value.
Practice Questions
3 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“Which of the following tables represents a function? Explain why. A) {(-1, 2), (0, 5), (1, 2), (2, 8)} B) {(3, 4), (3, 5), (6, 7), (8, 9)} C) {(1, 5), (2, 6), (3, 7), (1, 8)}”
Complete Lesson Package
Get all 3 ready-to-use resources:
