Question

Are all linear equations functions? Is there an instance when a linear equation is not a function? Give examples to support your answer.

Answer 1

To my knowledge , yes

Answer 2

If it is a vertical line it is not a function since all the ordered pairs have the same first number.

Answer 3

since I don't think verticle or horizontal line are linear

Answer 4

\[x=2\] is not a function

Answer 5

horizontal is ok, that is a constant function, but vertical fails vertical line test miserably

Answer 6

but isn't x=c still a constant function