16-3: Practice Buddy: Independent Practice; Problem Solving 16.3.IP-14
Question Help
15 ft
Novak's room is shown to the right. It has a
perimeter of 60 feet. Tell how to use an
equation to find the missing length in
Novak's room.
x ft
15 ft
7 ft
9 ft
8 ft
The side opposite of the missing length is 15 feet, so the equation
can be used to find the missing length. So, the missing
length is
feet.
(Type a whole number.)

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

step-by-step explanation:

the answer is 89 d

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