2.78 km Before the eruption of a volcano, the volcano was 2.78 kilometers high. After
the eruption, the volcano was 2.28 kilometers high. Use the bar diagram to
find the difference in height of the volcano before and after the eruption, in
meters.
2.28 km
?
Click the icon to see the metric units of length.
The difference in height of the volcano before and after the eruption is
(Type a whole number or a decimal.)
meters.

The difference in height is 0.5

Step-by-step explanation:

To find the difference just subtract 2.28 from 2.78

0.5

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:

45

step-by-step explanation: