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The angle between the positive horizontal axis and a given line is 135o. Find the...

Mathematics
JAMB 1997
The angle between the positive horizontal axis and a given line is 135o. Find the equation of the line if it passes through the point (2,3)
  • A. x - y = 1
  • B. x + y = 1
  • C. x + y = 5
  • D. x - y = 5
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Correct Answer: Option C
Explanation
m = tan 135o = -tan 45o = -1

\(\frac{y - y_1}{x - x_1}\) = m

\(\frac{y - 3}{x - 2}\) = -1

= y - 3 = -(x - 2)

= -x + 2

x + y = 5
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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