if y is directly proportional to x and y=12 when x=4 then,
find
(1)an equation connecting x and y
(2) the value of y when x=8
(3) value of constant k
(4) the value of x when y=21
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Answers
Answered by
2
Answer:
option 3 y=kx
because y is directly proportional to x
Answered by
0
Answer:
it's directly proportional relationship here with respect y over x where k is constant here.
when x =4 , y=12,
12= k× 3 so k=3 Because we know 3×4=12
when x = 8
y=3×8
= 24
when y= 21 into y=3x
21=3x
x = 21/3 =7
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