SOLUTION: Please help me find solution to this problem... Suppose that y varies directly with x, and when y is 2, x is 3. a. Write the direct variation equation for the data. b. Find x wh

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Please help me find solution to this problem... Suppose that y varies directly with x, and when y is 2, x is 3. a. Write the direct variation equation for the data. b. Find x wh      Log On


   



Question 1091566: Please help me find solution to this problem...
Suppose that y varies directly with x, and when y is 2, x is 3.
a. Write the direct variation equation for the data.
b. Find x when y is 42
Thanks you heaps.

Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
y = kx, where k is the constant of proportionality
:
2 = 3k
k = 2/3
:
a) y = 2x/3
:
b) 42 = 2x/3
2x = 126
x = 63
: