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4y-3x=25 is the tangent to the circle x^2+y^2=25 at the point P(-3,4). The equation of the radius of the circle that passes through P is...

Working out is appreciated. Thanks a lot

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The line has slope 3/4
So, the radius has slope -4/3

Thus, the line with that slope through P is
y-4 = -4/3 (x+3)

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