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What is the value of p if the gradient of the line joining (-1,p) and...

Mathematics
JAMB 2009
What is the value of p if the gradient of the line joining (-1,p) and (p, 4) is
2
3
?
  • A. -2
  • B. -1
  • C. 1
  • D. 2
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Correct Answer: Option D
Explanation
Gradient = y2 - y1
x2 - x1

2
3
 = 4-p
p-(-1)

2
3
 = 4-p
p+1

3(4-p) = 2(p+1)
12 - 3p = 2p + 2
12 – 2 = 2p + 3p
10 = 5p
p = 10
5

= 2

There is an explanation video available below.

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Explanation Video

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Project Topics and Materials, Post-UTME past questions - Download now or upload yours to get paid
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Project Topics and Materials, Post-UTME past questions - Download now or upload yours to get paid
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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