Shawn left the science museum two hours before Mark. They traveled in opposite directions. Mark traveled at 65 km/ for three hou
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x = 6
given x varies inversely with y then
xy = k ← k is the constant of variation
to find k use the condition x = 4 when y = 9, hence
k = 4 × 9 = 36
x = ← inverse variation equation
when y = 6, then x = = 6
Set up a system of equations like this, where "k" represents a kolache and "d" represents a donut:
We're solving for d. First, we can rearrange the second equation to have it equal k:
Next, we can substitute this in for k in the first equation:
Finally, we can get the value of d if we solve this equation:
You can buy a donut at Sunrise Donuts for $0.94.
We're solving for d. First, we can rearrange the second equation to have it equal k:
Next, we can substitute this in for k in the first equation:
Finally, we can get the value of d if we solve this equation:
You can buy a donut at Sunrise Donuts for $0.94.