How do I find the y intercept when all that is given is the x intercept?

you dont, just make a vertical line where you plotted your point

Step-by-step 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

2 (cos pi/15 + i sin pi/15) and 2 (cos 7 pi/15 + i sin 7 pi/15).

Step-by-step explanation:

You said