SOLUTION: Suppose that y is directly proportional to x.
If y=12 when x=-4, what is the value of y when x=25?
Algebra.Com
Question 565997: Suppose that y is directly proportional to x.
If y=12 when x=-4, what is the value of y when x=25?
Answer by Horlaye(27) (Show Source): You can put this solution on YOUR website!
solution: y=xk (where k is the constant)
subtitute the values for x and y
12=4k
divide both side by the co-efficient of k
12/4=4k/4
k=3
the law connecting the two variables : y=3x
when x = 25
y = 3x
y = 3(25)
y = 75
the value of y =75
RELATED QUESTIONS
Suppose that y is directly proportional to x.
If y = 6 when... (answered by stanbon)
The variable Z is directly proportional to X, and inversely proportional to Y. When X is (answered by stanbon,MathLover1)
Suppose y is directly proportional to x and that y=20 when x=4
what is the constant of... (answered by ankor@dixie-net.com)
SUPPOSE Y IS DIRECTLY PROPORTIONAL TO X AND THAT Y =-68 WHEN X... (answered by Alan3354)
The variable Z is directly proportional to X, and inversely proportional to Y. When X is (answered by Cromlix)
The variable Z is directly proportional to X, and inversely proportional to Y. When X is (answered by rothauserc,ikleyn)
The variable Z is directly proportional to X, and inversely proportional to Y. When X is (answered by ikleyn,stanbon)
If y is directly proportional to x and y=8 and x=10 what is the value of y when... (answered by Alan3354)
suppose that y is directly proportional to x. If y=10 when x=3 complete parts a and b.... (answered by solver91311)