How do you solve this problem y equals x plus 9?

Answer 1

First, you have to be clear in your own mind of what the problem really is.

There is no problem here. There's only a statement, telling us the relationship

between two quantities, namely, that whatever one of them is, the other one

is bigger by 9.

Other than drawing a graph of this equation, there not a thing you can do with it.

There are an infinite number of pairs of numbers that 'x' and 'y' can be ... every point

on the graph is one of them.

Examples:

X . . . Y

0. . . . 9

1 . . . 10

2 . . . 11

9 . . . 18

42 . . 51

If you want to know a single number for 'x' and a single number for 'y', you need

another equation, in addition to the one given in the question.