The x-intercept is the point where the line crosses the x-axis. On the other hand, the y-intercept is where the line crosses the y-axis.
Thus, for #3, the x-intercept is (1, 0), and the y-intercept is (0, -1).
For #4, the line passes through the origin so the x- and y-intercepts are both (0, 0).
For #5, the x-intercept is (0.5, 0) and the y-intercept is (0, 1).
For #6, the x-intercept is (-3, 0) and the y-intercept is (0, 1).
For #7, the x-intercept is (-2, 0) and the y-intercept is (0, -1).
For #8, the x-intercept is (2.5, 0) and the y-intercept is (0, -4)
To obtain the x-intercept, we look for the point of intersection of the given line and the x-axis. Thus, the y-coordinate is always 0. This means if the line passes through the x-axis at "a", then the x-intercept is (a, 0).
To obtain the y-intercept, we look for the point of intersection of the given line and the y-axis. Thus, the x-coordinate is always 0. This means if the line passes through the y-axis at "b", then the y-intercept is (0, b).