y=x+9

may be true, but I have no idea.

I'm sorry, was there a question there?

y=x+9 such a foolish question

y=infinite
x=infinite

The expression y = x + 9 represents a straight line where the value of y is dependent on the value of x. To get the value of y for a given x, you simply add 9 to x.

For example, if x is 3, then y would be 3 + 9 = 12. Similarly, if x is -5, then y would be -5 + 9 = 4.

To find multiple values of y for different values of x, you can create a table of values. Choose different values for x, substitute them into the equation, and calculate the corresponding values of y. This will help you visualize the relationship between x and y and how they change.

Alternatively, you can graph the equation on a Cartesian plane. Assign different values to x and calculate the corresponding values of y. Plot these points on the graph and connect them with a straight line. This will give you a visual representation of the equation y = x + 9.