Determine if the following is always, sometimes, or never true.
y = -1/5 x + 3 is a function.

Question

Determine if the following is always, sometimes, or never true.
y = -1/5 x + 3 is a function.

shamil98 · Answer

What do you think it is?

anonymous · Answer

Sometimes?

shamil98 · Answer

Remember an equation is a function if it passes the vertical line test, in this case all you have is a line.
So it would be... 
e.g:
|dw:1396249613965:dw|
it only intersects at point of the line, so it is ALWAYS a function.

anonymous · Answer

Thanks! I do online school so its hard for me to find a simple explanation, but you did that well.

shamil98 · Answer

No problem :)

zzr0ck3r · Answer

This is weird phrasing. An equation is not a function. A function is a set of ordered pairs that passes a few conditions. $\{(x,y)|y = -1/5 x + 3\}$ is a function.

This reads "the set of all (x,y) such that -1/5x+3=y".

I'm not sure if this helps, or makes it more confusing, but it is what it is.