Mathematics
If the points (1, 4), (3, -2) and (p, -5) lie on a line, find the value of p.
Straight Line Eq
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Answer
Equation of line passing through (1, 4) and (3, -2) i.e two points can be given by two-point formula i.e.
Since (p, -5) lies on the line it will satisfy it. Putting the values,
⇒ -5 = -3p + 7
⇒ 3p = 7 + 5
⇒ 3p = 12
⇒ p = 4.
Hence, the value of p is 4.
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