Question

describe the graphs of the relations y=3 and x=3. are these relations functions? explain

Answer 1

For x=3, it basically means that for every point on the graph, the x value will be 3.

Answer 2

So, it is not a function. It is is just a vertical line, and therefore fails the vertical line test.

Answer 3

However, y=3 means all the y values are 3, so it's a horizontal line.

Answer 4

That is a function.

Answer 5

So, there's a way to remember these two.

Answer 6

It's "HOY VUX" - HOY means Horizontal, slope O, and Y=something.

Answer 7

VUX means Vertical line, slope Undefined, and X=something.

Answer 8

All clear?

Answer 9

yes thankyou very much