Question

4. If f(x) varies directly with x and f(x) = 4 when x = 12, then what is the value of f(x) when x = 60?
(Points : 4)
5
20
180
300

Answer 1

@shira44 @sammixboo @GretaKnows

Answer 2

@Nnesha

Answer 3

do you know the equation for direct ??

Answer 4

no

Answer 5

@Nnesha

Answer 6

well wouldnt direct kinda tell u straight out but not exactlly

Answer 7

direct variation **

Answer 8

equation is r
remember y is same as f(x) now replace x and y by their values then solve fr k

Answer 9

ok

Answer 10

i dont understand what is y?

Answer 11

ooo its 4

Answer 12

so 4 =k12

Answer 13

k = 3?

Answer 14

yep nesha is right

Answer 15

y is same as f(x)

Answer 16

you can right like this