SA3 marksYear: 2025MediumCBSE Class 10
coordinate-geometrysection-formula
Question
Find the ratio in which the y-axis divides the line segment joining the points (5,−6) and (−1,−4). Also find the point of intersection.
Solution
1
Let the ratio be k:1 and point on y-axis be P(0,y). Using section formula: 0=k+1−k+5
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⇒−k+5=0⇒k=5. Hence, ratio is 5:1.
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y=5+1−4(5)+(−6)(1)=6−20−6=6−26=−313. Point of intersection is P(0,−313).
+1 mark