Question: There are two coordinates: A (-4,5) and B (6,-3). The midpoint is (1,1), and the slope-intercept form is y= -4/5x + 9/5. The equation of

There are two coordinates: A (-4,5) and B (6,-3). The midpoint is (1,1), and the slope-intercept form is y= -4/5x + 9/5. The equation of the line perpendicular to that equation is y= 5/4x - 1/4. The perpendicular line must intersect the midpoint, and using that equation it does intersect the midpoint, but how do I get the y-intercept of the perpendicular line, which is -1/4?

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