MATHEMATICS
JAMB 2002 - Question 39
Mathematics 2002 JAMB Past Questions - Question 39: Find the value of & if the line 2y-&x+4=0 is perpendicular to the line y+1/4x-7=0
A:
B:
C:
D:
Correct Answer
C
Explanation
To find the value of &, we need to determine the slope of the line 2y - &x + 4 = 0 and the slope of the line y + (1/4)x - 7 = 0.The given line y + (1/4)x - 7 = 0 is in the form y = mx + c, where m is the slope of the line. Comparing this equation to the standard form y = mx + c, we can see that the slope of this line is (1/4).For two lines to be perpendicular, the product of their slopes must be -1. Therefore, the slope of the line 2y - &x + 4 = 0 is the negative reciprocal of (1/4).So, (-&/2) * (1/4) = -1Simplifying the equation:-&/8 = -1Multiplying both sides by 8:-& = -8Dividing both sides by -1:& = 8Therefore, the value of & is 8.
Frequently Asked Questions
Examkits is a JAMB CBT practice platform that provides over 20 years of past questions, Post UTME questions, and detailed video solutions to help students prepare for their exams.
You can practice JAMB past questions online, on Android, or on a desktop using the Examkits app. Just register on our website and choose your preferred device.
Yes. Our Android and Windows versions support offline usage. Once downloaded and activated, no internet is required to use most of the features.
Yes, Examkits provides detailed video explanations for all JAMB past questions from 2000 to 2024, helping students understand how to solve each problem.
Examkits offers free practice for some subjects. However, full access requires a one-time affordable activation fee for each version of the app.