(a) First, find the slope of the line that is going to be parallel to your line. The equation is in slope-intercept form:
where m = slope. Therefore in your equation the slope is 1.5.
Use this slope (since the line parallel to your line will have the same slope) and the point (-2, -1) to find the y-intercept (b) and determine the desired equation.
(b) For this one, follow the same steps as (a) except the slope of the desired equation will be the negative reciprocal of the slope of the given equation. So, use for your slope here.