Hi,

x^2+y^2 = 5^2  C(0,0) r = 5

( 0,0)

(-4,3) m = -3/4, slope of the radius drawn

Tangent Line:  m = 4/3

***Using point-slope form,  P(-4,3) point of tangency

  y - 3 = 4/3(x + 4)

    y = (4/3)x + 16/3 + 9/3

    y = (4/3)x + 25 /3





   

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