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AB and BC form a right angle at point B. If A = (-3, -1) and B = (4, 4), what is the equation of BC?A. x + 3y = 16B. 2x + y = 12C. -7x − 5y = -48D. 7x − 5y = 48 |
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Answer» Step-by-step explanation: A(-3,-1) B(4,4) m(AB)=y2-y1/x2-x1 =4+1/4+3 =5/7 m(AB)*m(BC)= -1 m(BC)= -7/5 Equation of BC y-y1=m(x-x1) y-4= -7/5(x-4) 5y-20= -7x+28 5y+7x-48=0 |
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