Question

If r= 9 and r = 3 and y varies directly as r then the value of y when r = 4 is​

Answer 1

Answer:

Step 1: Write the correct equation. Inverse variation problems are solved using the equation Inverse. When dealing with word problems, you should consider using variables other than x and y, you should use variables that are relevant to the problem being solved. Also read the problem carefully to determine if there are any other changes in the inverse variation equation, such as squares, cubes, or square roots.

Step 2: Use the information given in the problem to find the value of k, called the constant of variation or the constant of proportionality.

Step 3: Rewrite the equation from step 1 substituting in the value of k found in step 2.

Step 4: Use the equation found in step 3 and the remaining information given in the problem to answer the question asked. When solving word problems, remember to include units in your final answer.Example 1 – If x varies inverse as y, and x = 7 when y = 3, find y when x = 9.

Step 1: Write the correct equation. Inverse variation problems are solved using the equation Inverse.

Step 1

Step 2: Use the information given in the problem to find the value of k. In this case, you need to find k when x = 7 and y = 3.

Step 2

Step 3: Rewrite the equation from step 1 substituting in the value of k found in step 2.

Step 3

Step 4: Use the equation found in step 3 and the remaining information given in the problem to answer the question asked. In this case, you need to find y when x = 9.

Step 4