Y varies directly affects if y equals negative five when x equals 15 find X when y equals three
1 answer:
Well,
We are given a direct proportion problem.
x varies directly as y.
When y = -5, x = 15.
Now, we are told to find x when y = 3.
We just have to recognize that the complete case is equal to the incomplete case. In other words, we set the -3 equal to the x/3.
Multiply both sides by the LCM.
LCM of -1 and 3 = 3
-9 = x
When y = 3, x = -9.
We are given a direct proportion problem.
x varies directly as y.
When y = -5, x = 15.
Now, we are told to find x when y = 3.
We just have to recognize that the complete case is equal to the incomplete case. In other words, we set the -3 equal to the x/3.
Multiply both sides by the LCM.
LCM of -1 and 3 = 3
-9 = x
When y = 3, x = -9.
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First, we combine the terms on the left side of the equation to simplify the equation. Then we divide both sides by -3. k then equals 1/3.
To check, we plug in our value for k into the original equation:
We found k to be 1/3, so for every instance of k, we plug in 1/3. To simplify, we combine the left side to get -1, and we combine the right side to get -1.
Since -1 = -1, our solution is correct.