Q. Assume that y varies inversely with x. If y=2 when x=4, find y when x=1. Write and solve an inverse variation equation to find the answer.y= _____
Understand Relationship: Understand the relationship between y and x. Since y varies inversely with x, the relationship can be described by the equation y=xk, where k is the constant of variation.
Find Constant of Variation: Use the given values to find the constant of variation k. We are given that y=2 when x=4. Substitute these values into the inverse variation equation to find k. 2=4k
Solve for k: Solve for k.To find k, multiply both sides of the equation by 4.2×4=k8=kNow we have found the constant of variation k.
Write Inverse Variation Equation: Write the inverse variation equation with the found value of k. Substitute k=8 into the equation y=xk. y=x8 This is the equation that describes the relationship between y and x.
Find y for x=1: Find y when x=1. Substitute x=1 into the inverse variation equation y=x8. y=18y=8
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