Question

y is directly proportional to x. Given that y = 144 when x = 12, find the value of y when x = 7.​

Answer 1

Answer:

y=84

Step-by-step explanation:

y∝x

therefore

y=kx, where k is the constant of proportionality

144=k12

k=144/12

k=12

therefore, when x=7,

y=kx

y=12*7

y=84