written 6.0 years ago by
teamques10
★ 68k
|
The equation of straight line is y = ax + b
Changing co-ordinates, we get
b = -ax + y
| x | y | |
|---|---|---|
| 1 | 0 | b = -a |
| 2 | 1 | b = 1-2a |
| 4 | 3 | b = -4a + 3 |
| 2 | 0 | b = -2a |
Plot the above obtained eq. of line on the graph paper and then find a point through which maximum number of lines pass.
From the graph, we observe that 3 lines intersect a common point i.e. a = 1 & b = -1.
By using these values of a and b we can write another eq. of line in xy-plane i.e. y = x – 1
Hence, three lines intersecting at one point in ab-plane means there are three points on one line in xy-plane.
Line passes through three points out of four given points.
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