Question

The variable x varies jointly with y and z. Use x=2, y=4, z=1 to write an equation relating x, y

Answer 1

Answer:

Equation is $x=\frac{1}{2}yz$ and when y=2 and z=4, x will be 4.

Step-by-step explanation:

Given:

x varies jointly with y and z.

It also means x is directly proportional to y and z.

$x=2, y =4,z=1$

From above values we can compute the equation as.

$x=\frac{1}{2}yz\\2= \frac{1}{2} \times 4 \times 1\\2=2$

Hence the Equation is $x=\frac{1}{2}yz$

Now y=2 and z=4 we get.

$x=\frac{1}{2}\times 2 \times 4= 4$

Hence when y=2 and z=4, x will be 4.