1. a straight line that is increasing
2. y = -4
3. 2
(I have graphed the points in the photo below)
For number 1, it's simply asking if it's straight, and if it's going up or down from left-to-right. For this line, it would be a straight line that is increasing.
For number 2, the y-intercept is the point of which is on the y-axis, in which case, it would be -4.
For number 3, it's asking which point is laying on the x-axis, and that would be 2 for this one.
Need anything else? :)