Identifying functions by vertical line test
Identifying functions by vertical line test
IB Year 5 | Grade 11
Which of the following are graphs of functions? For those relations which are functions, write down the domain (as you observe) and the range.
Remark.
You may treat the vertical line test as a convenient visual test. It is not a rigorous proof that a relation is a function.
Solution:
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Answer:(i) Function; domain \([-1,1]\), range \([0,1]\). (ii) Not a function. (iii) Not a function as drawn.
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