Answer:
you dont, just make a vertical line where you plotted your point
Explanation:
I am going to explain this as best as i can because i dont really remember how to do this
My teacher taught it to me as:
y is fly
so when you get an equation like this but with a y you will plot the dot on the y axis and make a horizontal line
x is dive
when you get an equation like this one you will plot the dot (exactly how you did it) and make a vertical line on that dot
i dont really know how to explain so sorry if you dont understand, hope it helps