Question

y is directly proportional to x. When x=5, y=12. Find (I) y when x=7.5 (ii) x when y=84.​

Answer 1

Step-by-step explanation: y =kx , where k is a constant

given: x=5 , when y = 12

12 = 5k

k = 12/5

so y = (12/5)x

when x = 7.5

y = (12/5)(7.5) = 18