Find the Range f(x)=x+1 if x=4 - Math online

Math

$f (x) = {\begin{cases} x + 1 & x < 4 \\ x - 1 & x \geq 4 \end{cases}$

The range is the set of all valid $y$ values. Use the graph to find the range.

$(- \infty, \infty)$

Find the Range f(x)=x+1 if x<4; x-1 if x>=4

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