The slope of a line passing through two points with given x y coordinates can be found by dividing the (signed) difference between the two y coordinates by the (signed) difference between the two x coordinates, being careful to take the coordinates in the same order for each subtraction. In this instance, the slope is (-4 - 4)/(-1 - 3) = -8/-4 = 2.
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Slope = (1 - 4)/(3 - 1) = -3/2 = -1.5
If: slope is 3 and point is (1, 4) Then: y = 3x+1
If you mean points of: (-1, 2) and (-4, -3) Then the slope works out as: 5/3
Points: (-1, 2) and (3, -1) Slope of line: -3/4
If you mean: (-4, 1) and (1, 4) Then the slope works out as: 3/5