Sorry for the confusion, redoing my answer for you!
Using the points (9/2,1), (-7/2,7)
m=y2−y1 over x2−x1
Substitute in the values of x and y into the equation to find the slope.
m=7−(1) over −72−(92)
simplify
m=−3/4
Use the slope −3/4 and a given point (9/2,1) to substitute for x1 and y1 in the point-slope form y−y1=m(x−x1)
y−(1)=−3/4⋅(x−(9/2))
Rewrite in y=mx+b
solve for y
y=−3x/4+35/8
ill use desmos to graph (y=−3x/4+35/8)