If you mean: 7y = -7(x-4) then y = -x+7 whereas -1 is the slope and 7 is the y intercept
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2x-7y=14 2x-14=7y from this equation the slope is 2/7
If: 2x-7y = 20 Then: y = 2/7x -20/7 which is now in slope-intercept form
If: 4x-7y-28 = 0 then y = 4/7x-4 whereas 4/7 is the slope and -4 is the y intercept
Point: (7, -5) Slope: -4/7 Equation: 7y = -4x-7
Points: (8, 8) and (1, 2) Slope: (8-2)/(8-1) = 6/7 Equation: y-8 = 6/7(x-8) => 7y-56 = 6x-48 => 7y = 6x-48+56 Slope intercept form: 7y = 6x+8