SOLUTION: Suppose that y is directly proportional to x and that y = -64 when x = 7 Complete parts (a) and (b): (a) Find the constant of proportionality k (b) Use y=kx to find y when x=6

Question 655031: Suppose that y is directly proportional to x and that y = -64 when x = 7
Complete parts (a) and (b):
(a) Find the constant of proportionality k
(b) Use y=kx to find y when x=6
Thank you
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Suppose that y is directly proportional to x and that y = -64 when x = 7
Complete parts (a) and (b):
(a) Find the constant of proportionality k
y = kx
-64 = k*7
k = -65/7
-----------------------
(b) Use y=kx to find y when x=6
y = (-65/7)x
y = -65/7)6
----
y = -390/7
==================
Cheers,
Stan H.

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