Question

I have a quick question. Is a horizontal line considered as a linear function?

Answer 1

Any LINE is a linear function.

Answer 2

Are you sure? So that means a vertical line is a function too?

Answer 3

I should qualify my statement: Any LINE is a linear function except a vertical line.

Answer 4

Ok. Would this be considered as a function?

Answer 5

When I said "line" above I meant a "straight line."

The above graph is NOT a function because it fails the vertical line test. If I draw a vertical line it intersects the graph at two different points which means one x-value maps into two y-values which is a no no for functions. For functions, each x-value must map into just one y-value.

Answer 6

Alrighty!!:D Thanx soooooo much:D

Answer 7

You are welcome.