The ornamental design for a slide, as shown and described.
FIG. 1 is a top, front, right perspective view of the claimed design for a slide;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof; and,
FIG. 6 is a top view thereof.
The uneven-length broken 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.