The graph shows how the volume of a gas sample changes as the temperature changes and the pressure remains constant.
Gas Sample
35
130
Volume of Gas (ML)
25
20
0
20
BO
40 60
Temperature (°C)
100

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.

he answer is x=1x3 because x=1 to x=3