SOLUTION: WHICH RELATION IS NOT A FUNCTION
Y=X+2
Y=X^2-4
X=Y^2-4Y
X=3Y+4
Algebra.Com
Question 64735: WHICH RELATION IS NOT A FUNCTION
Y=X+2
Y=X^2-4
X=Y^2-4Y
X=3Y+4
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
WHICH RELATION IS NOT A FUNCTION
Y=X+2
Y=X^2-4
X=Y^2-4Y
X=3Y+4
---------
x=y^2-4y is not a function
Why?
Let x=0
Then y^2-4y=0
y(y-4)=0
y=0 or y=4
With a single value of x there are two values of y.
Therefore the rule is not a function.
Cheers,
Stan H.
RELATED QUESTIONS
x²+4x+y²-4y=-4,(x-2)²+(y-2)²=4
(answered by ikleyn)
graph each relation:
|x|+|y|=2
|xy|=6
x|y|=4... (answered by Fombitz)
2x+4y=2 and... (answered by suruman)
y(x – (9 – 4y)); use x = 4, and y =... (answered by jim_thompson5910)
Could you please help me find the inverse of the following function?
f(x) =... (answered by lwsshak3)
Which system is classified as inconsistent? (1)8x=2y+8, 3y=12x-12 (2)3x-3y=-2, x-y=5... (answered by RAY100)
y^2(1-x)=x^2(x+1)
what is this relation called?
Graph the... (answered by ikleyn)
Solve with gaussian elimination
2x+y+z=6
-3y-4y+2z=4... (answered by Edwin McCravy)
For which intervals is the following function increasing or decreasing?... (answered by stanbon)
solve by comparison
x+2y =4
x+y=2
another
x-4y=1... (answered by Theo)