parell to the line y=-3;containing the point (-1,2)?

Answer 1

y = -3 is horizontal

y = 2 is also.

Answer 2

y=2

Answer 3

y=2, because y=-3 is horizontal. If you have to show workings, then start with y=mx+b (m being the gradient, and b the y-intercept)

Since the gradient is 0 (because y=-3 is horizontal)
the function becomes y=b. The y-intercept is 2, from the coordinates given. And so you get y=2.

Very long, I know, but when you're in sec 1, no teachers really teach many shortcuts. :-]