how can i know if this one is function or not
2x-3y=4?

Question

how can i know if this one is function or not 
2x-3y=4?

amistre64 · Answer

how does your material define a function?

anonymous · Answer

that's why I'm asking

loser66 · Answer

That is the equation of a line. And it is a function for sure.

anonymous · Answer

can u tell me how to work it please!

amistre64 · Answer

your material doesnt define a function for you?

anonymous · Answer

I want to know how to work it

amistre64 · Answer

f is a function if it maps an element in its domain to only 1 element in the range

amistre64 · Answer

generally, we think of x as the domain values, and y as the range values

amistre64 · Answer

2x - 3y = 4 , solve for y

y = 2x/3 - 4/3

amistre64 · Answer

now, for any x we use, there is only one y that results

anonymous · Answer

i guess that's equal -2/3! is that' right then after that i have to solve it to see if it's function!!?

amistre64 · Answer

$$y=\frac23x-\frac43$$
since there is only 1 range element (y) for a given domain element (x) this is a function

anonymous · Answer

ok thank you so much

amistre64 · Answer

your welcome, its good to know how your material defines a function in order to work it according to your course tho.