Asked by abhigyan
using glazed paper ,show that 3/-7 and -9/21 are in prpportion.
Answers
Answered by
MathMate
The way to proceed is:
1. plot the two points (3,-7) and (-9,21) on graph paper
2. join the two points with a straight line (using a straight-edge)
3. If the line passes through the origin, then the two ratios are in proportion.
1. plot the two points (3,-7) and (-9,21) on graph paper
2. join the two points with a straight line (using a straight-edge)
3. If the line passes through the origin, then the two ratios are in proportion.
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