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Find the ratio in which the y axis divides the line segment joining the points (4,-6) and (-7,-4) |
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Answer» Let,A(4,-6) ,B(0,y) and C(-7,-4).AB=X1=4,Y1=-6 ,BC=X1=0,Y1=Y X2=0,Y2=y , X2=-7,Y2=-4 AB=BC(0-4) ² +(Y-6)²=(-7-0)²+(-4-Y)²16+Y²+36+2×Y×6=49 +16+y²-2×-4×-y16+y²+36+12y=49+16+y²+8y52+y²+12y=55+ý²-8y Pg 166 example 9 You can take help from book |
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