y = k x
-12.5 = 50 k
-25 = 100 k
k = -1/4
y = -x/4
y = - (47/4) / 4
= - 47/16
The value of y varies directly with x. When y = -12 1/2, x = 50. What is the value of y when x is 11 3/4, rounded to the nearest hundredths?
Can someone please show me how to solve this problem?
2 answers
since y=kx, y/k = k is constant, so you want y such that
y/(11 3/4) = (-12 1/2)/50
y = -47/16
y/(11 3/4) = (-12 1/2)/50
y = -47/16