Draw the graph of the following equations:

y = 4

y = 4 means the y co-ordinate is fixed and we can take any value of x

to draw graph we will require two points

let us consider point P whose x co-ordinate be 2 and y co-ordinate is already given as 4

⇒ P (2, 4)

Now consider point Q whose x co-ordinate be 4 and y co-ordinate is already given as 4

⇒ Q (4, 4)

Plot points P and Q and join them to get the graph of y = 4