What is the range of the function y = (2x+ 3 ) for the domain 3 ≤ x ≤ 9 ?
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Answer:
Step-by-step explanation:
In the set of ordered pairs {(-2, 0), (0, 6), (2, 12), (4, 18)}, the domain is the set of the first number in every pair (those are the x-coordinates): {-2, 0, 2, 4}. The range is the set of the second number of all the pairs (those are the y-coordinates): {0, 6, 12, 18}. This table describes y as a function of x.
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Answer:
since you can clearly see that the function increasing over all domain therefore to solve this question quickly you can just put values of extreme values of domain in the the given function to get range
range of given function
[2×3+3,3×9+3]
[9,21]
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