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Question
The slope of the line joining (12, 3), (4, a) is `1/8`. The value of ‘a’ is
Options
1
4
− 5
2
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Solution
2
Explanation;
Hint:
Slope of a line = `1/8`
`(y_2 - y_1)/(x_2 - x_1) = 1/8`
`("a" - 3)/(4 - 12) = 1/8`
⇒ `("a" - 3)/(-8) = 1/8`
a − 3 = − 1
a = − 1 + 3
The value of a = 2
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