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What are the domain and range of a graph in interval notation?

Step-by-step explanation:

For the constant functionf(x)=c, the domain consists of all real numbers; there are no restrictions on the input. The only output value is the constant c, so the range is the set {c} that contains this single element. In interval notation, this is written as [c,c], the interval that both begins and ends with c.

step-by-step explanation:

you divide the denominator by the numerator on both sides and if the quotients are equal then the fractions are equivalent