Question

If y is 5 when x is 2.5 and y varies directly with x, find y when x is 10.

5
7.5
12.5
20

Answer 1

varies directly, meaning, if one grows, the other grows, if one shrinks, the other shrinks
usually by "some factor"
so, what do you think "y" will be?
notice "x" used to be 2.5, now is 10, 10/2.5 =4, so "x" is now 4 times bigger than before

Answer 2

then the answer would be 20

Answer 3

yes, "y" will grow too, by 4 times, 5 x 4 = 20

Answer 4

thank u

Answer 5

yw