What is the range of the function y=3x+2 with domain -2≤x≤-1 拜托了QuQ

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What is the range of the function y=3x+2 with domain -2≤x≤-1 拜托了QuQ

What is the range of the function y=3x+2 with domain -2≤x≤-1 拜托了QuQ
What is the range of the function y=3x+2 with domain -2≤x≤-1

拜托了QuQ

What is the range of the function y=3x+2 with domain -2≤x≤-1 拜托了QuQ
因为 x≥-2,所以 y=3x+2≥3*(-2)+2=-4
因为 x≤-1,所以 y=3x+2≤3*(-1)+2=-1
所以,-4≤y≤-1
QED