0.1 Interval Notation
 (1,5)This is an OPEN interval (dots are OPEN).The endpoints, 1 and 5, areNOT included.In interval notation, this is:All values from 1 to 5 NOT including1and 5 In interval notation, this is:(   ,   )The dots are OPEN. This isAll values from 1 to 5 NOT including1and NOT including 5(fill in BLANKS)An OPEN intervalA CLOSED interval [1,5]This is a CLOSED interval (dots are CLOSED).The endpoints, 1 and 5, ARE included.In interval notation, this is:All values from 1 to 5  INCLUDING1and 5 [   ,   ]In interval notation, this is:Dots are CLOSED.This is...All values from 1 to 5  INCLUDING1and 5(fill in BLANKS)An OPEN intervalA CLOSED interval IntervalNotationInequality:Interval(dots)CLOSED?[1,5]?1≤x≤5?1 2(2, ∞](-∞, 2)(2, ∞)[2, ∞)"x is greater than 2" Write in interval notation:x > 2(-∞, 2)(2, ∞](2, ∞)[2, ∞)"x is greater than 2"Infinity is ALWAYSexpressed as anOPEN interval, use ) not  ]Correct answer Write in interval notation:-1≤ x < 4 (-1, 4][-1, 4][-1, 4)(-1, 4) Write in interval notation:-1 < x < 4(-1, 4][-1, 4][-1, 4)(-1, 4) Select the appropriate interval representation for thenumber line shown.-1[-1, 2)[-1, 2] (-1, 2] (-1, 2)2 (-∞, -4)The interval to the left is:-4[-4, -∞]1 (-∞, -4](-4, ∞) (1, ∞)The interval to the right is:-4[1, ∞)1 [1, ∞](1, ∞)     Select the appropriate interval representation for thenumber line shown (the union of both shaded parts).[-4, -∞] U (1, ∞)          U means "union"(-∞, -4) U [1, ∞)(-∞, -4] U [1, ∞)(-4, ∞) U (1, ∞)-41 (((( THE ))))[[[[ END]]]]
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