Which is NOT a function?
A.y-x=6
B.y=2x
C.x=-2
D.y+x=12
I think the answer is B, but I'm not too sure. please help me I'm relly struggling
Well, a function is a expression that uses one or more variables.
oooh so would it be C?
yes, C
a function is a relation between two variables. C has only a single variable.
@Emma Helper did you know you can help people on Brainly! I help people here and at brainy!
Thank you @oobleck
Peer Tutor, oooh cool! I'll do that
To determine which option is not a function, you need to understand the definition of a function. A function is a relationship between two variables in which each input (x-value) corresponds to exactly one output (y-value).
Let's analyze each option to determine if they are functions:
A. y - x = 6
This equation can be rearranged to y = x + 6. Since there is a unique y-value for every x-value, this is a function.
B. y = 2x
This equation represents a linear function with a constant slope of 2. All x-values have a unique y-value, making it a function.
C. x = -2
This equation represents a vertical line through x = -2. Since there are infinite y-values corresponding to x = -2, this is not a function.
D. y + x = 12
This equation can be rearranged to y = -x + 12. Similar to option A, there is a unique y-value for every x-value, making it a function.
Therefore, the option that is NOT a function is C. x = -2.