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if the slope is 1 in 22, draw horizontal line 22 long, then vertical line 1 high, hypotonuse is slope, angle of slope is (INV tan ( 1 / 22)) . same deal for 1 in 66, 66 along then 1 up, angle is (INV tan ( 1 / 66))
Points: )1, 1) and (3, 3) Slope: 1
If you mean points of (3, 3) and (-3, -1) then the slope works out as 2/3
Slope = (1 - 4)/(3 - 1) = -3/2 = -1.5
Points: (-1, 2) and (3, -1) Slope of line: -3/4