Well,subtract 3/4 from each side to get z দ্বারা itself. Then, since it is less than অথবা equal to, the dot is filled in, and start at -1.5(I believe.*doesn't have calculator*), going left on the number line.
Well, I know আপনি graph it with a closed circle... but it's kind of confusing to me since it isn't in inequality form .-. I'm sure আপনি can figure out which way the অনুষ্ঠান- অ্যারো goes, though.