Question
X is partly constant and partly varies as y. When y is 5,x is 7 and when y is 7 x is 8. Find the law of the variation and find x when y is 11
Answers
Henry
(7,5), (8,7), (x,11).
Slope = (7-5)/(8-7) = 2.
Slope = (11-7)/(x-8) = 2.
2x-16 = 4.
X = 10.
Slope = (7-5)/(8-7) = 2.
Slope = (11-7)/(x-8) = 2.
2x-16 = 4.
X = 10.