0
The square root operation is not a function because for each value of y there can be 2 values of x - the principal square root and its negative. This can only be rectified by limiting the range of the opearation to the principal or positive square root.
Furthermore, it also depends on the domain of the function. If y<4 then the square root is not defined within Real numbers.
So, for y ≥ 4, x = +sqrt(y-4) is a function.
Still curious? Ask our experts.
Chat with our AI personalities
MaxineI respect you enough to keep it real.
Chat with Maxine
JudySimplicity is my specialty.
Chat with Judy
EzraFaith is not about having all the answers, but learning to ask the right questions.
Chat with EzraAdd your answer:
Earn +20 ptsQ: Is x equals the square root of y-4 a function?
Write your answer...
Submit
Still have questions?
Trending Questions
What is the difference between reflex action and walking give more points?
Are pi's digits periodic?
Is it possible to get pregnant off of pre-cumb?
When did pascal build a calculater to help with taxes?
What is 15 billion divided by 4.5 million?
What is 27000 divided by 9?
What is the logarithm of 1.0882?
What is the future perfect of put?
Was the Australian dollar more than the us dollar?
Where is there a gold value calculator online?
P x r equals 176. what is the inverse?
X over 5 equals 8 over 21 solve for x?
What is 1x PBS?
What does it mean to liqudate?
I'm 5'9 and 16 can i reach 6'3 or at least 6'?
Which best describes the effect on the graph of y equals 4x plus 8 if the y-intercept is changed to -3?
What is the difference between GUI and API?
How do you do x2 equals 11x -10?
How do you prove tan x plus tan x sec 2x equals tan 2x?
What is the antiderivative or 2x2-x?
Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.