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

1 Answer
Oct 5, 2017

Answer:

No!

Explanation:

#y=sqrt(2x-5# can be written as

#y^2=2x-5#

#=y^2color(red)(-y^2)=2x-5color(red)(-y^2#

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