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andrew11 [14]
2 years ago
13

The pair of points is on the graph of an inverse variation. Find the missing value. (9,5) and (x,6)

Mathematics
2 answers:
olchik [2.2K]2 years ago
7 0
(9,5)
Y=k/x
5=k/9 solve for k
K=5*9=45 now use it to solve for the second pair
(X,6)
Y=k/x
6=45/x solve for x
X=45/6==7.5.....answer
Dominik [7]2 years ago
4 0

Answer:

The missing value x is, \frac{15}{2} or 7\frac{1}{2}

Step-by-step explanation:

The Inverse variation problems can be solved by using the equation, i.e,

y \propto \frac{1}{x}.

use constant variation k to write the above equation as:

y=\frac{k}{x}                         ......[1]

Now, use the given information to calculate the value of k;

we need to find the value of k ; when x=9  and y=5

5=\frac{k}{9} or

k =9\times 5

Simplify:

k =45.

Rewrite the equation [1] by substituting the value of k =45,

⇒ y = \frac{45}{x}                     ......[2]

Substitute the value y=6 in equation[2] to find x:

6 =\frac{45}{x} or

x = \frac{45}{6} or x=\frac{15}{2}=7\frac{1}{2}

Therefore, the missing value x is, \frac{15}{2}=7\frac{1}{2}



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