-3<x<=3 Write the inequality in interval notation and graph the interval.

Question

Write the inequality in interval notation and graph the interval.

Answer 1

USE [ OR ] for closed dots ⇒  <= or >=

USE ( OR ) for open dots  ⇒   <  or > 

 

so the answer is (-3,3]

and make sure that you put the smaller number is the left and the bigger number in the right 

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Answer 2

The interval is written as (-3, 3]. The graph is a straight line from -3 to 3 on the x-axis where at -3 there is an open circle since x > -3 and a closed circle at 3 since x <=3. A ( means not included and ] means included.

 

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