1. the first one horizontally and

2. the second one vertically.

First go horizontal and then go vertical

Here in the diagram you go horizontal by x, so the pt. on the x axis will be (x,0) then you go vertical to reach the line y=x. So since y is equal to x and the x coordinate in this case, we have taken to be some number x, then the y is also x, so the pt. on the line will be (x,x).

But let us not stop at (x,x) and keep going up by another vertical distance x so that now we are at (x,2x) as shown in the picture.

Now if you join the Origin to this point you will get a line whose equation will be y = 2x. It is very simple actually. In fact, if we still go vertically up and reach (x, 3x) and connect that point to O, we will get a line y=3x and so on and so forth.

Now you know how to draw y=kx where k is a number greater than 1. It will simply be a line which will be steeper than y=x, right ? do you get that ? simple, is it not ?

**what if we change the line to less steep than y=x ?**