Answer: The slope is -3/8
Step-by-step explanation: This is actually a LOT simpler than it seems. Just remember, perpendicular line intersect at right angles, therefore their slopes are the exact opposite. The opposite, or reciprocal, of -8/3 is 3/8. While I was learning this, one tool that helped me to check my answers was desmos. Check it out if you haven't used it before.