9 The change from the liquid phase to the gas phase caused by the addition of heat is called_ ___

Boiling

Explanation:

It's a phase transition from the liquid to gas once at or above the boiling temperature. Boiling is the rapid vaporization of a liquid once heated to its boiling point.

y = -1/4x +2

Step-by-step explanation:

We know the y intercept is 2  ( where it crosses the y axis)

We also need to find the slope

( 0,2) and (4,1) are two points on the line

Using the slope formula

m = (y2-y1)/(x2-x1)

   = (1-2)/(4-0)

   -1/4

We can write the equation in slope intercept form

y = mx+b where m is the slope and b is the y intercept

y = -1/4x +2