Question

Y is directly proportional to y=30, x=6
Work out the value of y when x=12

Answer 1

Answer:

y = 60

Step-by-step explanation:

y = k × x

substitute values into equation:

30 = k × 6

k= 5

y = 5x

then substitute the next values into equation:

y = 5 × 12

y = 60