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Given a line segment AB joining the points A( -4, 6 )and B (8 , -3 )find (i)the ratio in which AB is divided by the y-axis.(ii)the coordinates of the points of intersection.(iii)the length of AB. |
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Answer» <P>Answer: Step-by-step explanation: LET p(0,y) a point on y AXIS divide the line AB Let the ratio m1:m2=k:1 Using SECTION formula, 0=k(8)+1(-4)/k+1 8k-4=0 8k=4 K=1/2=ratio in which AB is divided by y axis y=1(-3)+2(6)/1+2 y=12-3/3 y=3 Coordinates of point of intersection:-P(0,3) Distance AB=√8-(-4)+-3-(6) =√32-18 =√14 units Hope it helps.... |
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