Question

if y varies directly with x and y = 4 when x = -2, find y when x=18

Answer 1

You need to figure out how much x changed going from -2 to 18 and then change y by the same amount. In other words, y = 4 + (18 - (-2))

Answer 2

so i subtact 18 - (-2) then add 4 from answer

Answer 3

Yes (although the two negatives end up making it an addition)

Answer 4

my options are
a. 33
b. -32
c. -33
d. -36