Find the slope 1) (6,3) (6,-1) 2: (9,-3) (-2,3) 3: y=-9x-1 4: -2y=x-1 5: 3x-5y=7

Finding the slope from two points is as simple as:

Plug in your quantities:

because, y2 = -1, y1 = 3, x2 = 6, x1 = 6

Solve:

This is as far as this equation goes because you cannot divide by zero - are you sure you've provided the correct equation?

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)