Is y=sqrt(2x-5)y=√2x−5 a linear function and explain your reasoning?

1 Answer
Gaya3
Oct 5, 2017

No!

Explanation:

y=sqrt(2x-5y=√2x−5 can be written as

y^2=2x-5y2=2x−5

=y^2color(red)(-y^2)=2x-5color(red)(-y^2=y2−y2=2x−5−y2

=2x-5-y^2 = 0=2x−5−y2=0, Whose degree (highest power of the variable) is 2 & is a quadratic function.
(Linear function will have degree 1)

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