The ornamental design for a slide, as shown and described.
FIG. 1 is a rear view of the claimed design for a slide;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a top, front, right perspective view thereof;
FIG. 6 is a left side view thereof; and,
FIG. 7 is a right side view thereof.
The uneven-length lines immediately adjacent to the shaded area depict boundaries of the claimed design and form no part thereof. The even-length broken lines showing the remainder of the slide depict environmental structure and form no part of the claimed design. The unshaded regions within the shaded area that are demarcated by uneven-length broken lines form no part of the claimed design. Portions of the slide not shown in the drawing form no part of the claimed design.