SOLUTION: Suppose y is directly proportional to x and that y=2 when x=3. Find the constant of proportionality k. k=? Use y=kx to find y when x=8 y=?

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Question 1055233: Suppose y is directly proportional to x and that y=2 when x=3. Find the constant of proportionality k.
k=?
Use y=kx to find y when x=8
y=?
Found 3 solutions by josgarithmetic, MathTherapy, ikleyn:
Answer by josgarithmetic(39617) About Me  (Show Source):
Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!
Suppose y is directly proportional to x and that y=2 when x=3. Find the constant of proportionality k.
k=?
Use y=kx to find y when x=8
y=?
k+=+2%2F3

Find y when x = 8.

FYI: It's DEFINITELY NOT: 3%2F4 because %282%2F3%29+%2A+8+%3C%3E+3%2F4

Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.
Suppose y is directly proportional to x and that y=2 when x=3. Find the constant of proportionality k.
k=? 
     y = kx;  --->  2 = k*3  --->  k = 2%2F3

Use y=kx to find y when x=8
y=? 
     y = kx = %282%2F3%29%2A8 = 16%2F3 = 5 1%2F3.


Writing by "josgarithmetic" is simply IRRELEVANT.