Why is my slope close to my density numbers

These question are hard can you me with answers

Question 101 points)which equation in slope-intercept form represents the line that passes through (5, 1) and(-4,7)

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles