SOLUTION: y varies directly as x an y when y=100 x=20. find y when x=5

Question 203085This question is from textbook
: y varies directly as x an y when y=100 x=20. find y when x=5 This question is from textbook

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
y varies directly as x when y=100 x=20. find y when x=5
----------------------
y = kx
Find k:
100 = k*20
k = 5
---------------
Equation:
y - 5x
Find y when x = 5
y = 5*5
y = 25
================
Cheers,
Stan H.
RELATED QUESTIONS
y varies directly as x. if y=16 when x=5, find y when... (answered by Fombitz)

If y varies directly as x, and y = 16 when x = 20. Find y when x = 5. (answered by stanbon)

If y varies directly as x, and y = 16 when x = 20. Find y when x = 5. (answered by Fombitz)

If x varies directly as y, and x = 20 when y = 5, find x when y =... (answered by MathLover1)

find an equation of variation where y varies directly as x and y = 100 when... (answered by jim_thompson5910)

Suppose y varies directly as x . If y= 5 when x= 8 find y (answered by ikleyn)

If y varies directly as x, and y = 7 when x =5, find y when x =10 y= blank? (answered by Alan3354)

If y varies directly as x, and y=6 when x=5, find y when x=15. y= (answered by amalm06)

If y varies directly as x, and y = 7 when x=5, find y when x=15.... (answered by stanbon)