Interval Notation

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In interval notation, we write: (−∞,∞) . On the horizontal number line, that covers all numbers from left to right (your x-axis).

Write the numbers in the interval notation with a smaller number appearing first on the number line on the left. If the set is unbounded on the left, use the symbol -∞ and if it is unbounded on

Write |x| > 5 | x | > 5 as a piecewise. Tap for more steps Find the intersection of x > 5 x > 5 and x ≥ 0 x ≥ 0. Divide each term in −x > 5 - x > 5 by −1 - 1 and simplify. Tap for more steps Find the

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