Question

To locate a point on a coordinate grid ,where do you start?

Answer 1

It depends upon what you have been given.
One possibility is that you have a function, for example `y = 2x+3` and want to establish the point on the coordinate grid for when `x=5`
Substituting your value for `x` into the function gives a value for `y` (in the example `y=13`)
So you are looking for the point `(x,y) = (5,13)` (in this example)

This point is located `5` units to the right of the coordinate origin and `13` units up.