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What is the domain and range for #y = 40 - 8x^2#?

1 Answer

Mar 28, 2018

#D={x∈R}#

#R={y∈R | x<=40}#

Explanation:

#color(violet)"Domain":# x can be any real number.

and

#color(violet)"Range":# y can be any real number however, it can only be less than or equal to 40.

graph{40-8x^2 [-10, 10, -5, 5]}

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