Answer :
Answer:
In simpler terms, if x and y are directly proportional, it means that as one value increases, the other value increases by a consistent ratio.
In this case, we are given that y = 12 when x = 10. To find y when x = 30, we can set up a proportion to solve for y:
Since x and y are directly proportional, we can set up the following proportion:
x1 / y1 = x2 / y2
where:
x1 = 10, y1 = 12 (when x = 10 and y = 12)
x2 = 30, y2 = what we want to find (when x = 30)
Plugging in the values:
10 / 12 = 30 / y2
Cross multiplying gives us:
10y2 = 12 * 30
10y2 = 360
y2 = 360 / 10
y2 = 36
Therefore, when x = 30, y would equal 36.