Question

According to Charles’ Law, the pressure P in pascals of a fixed volume of a gas is linearly related to the temperature T in degrees Celsius. In an experiment, it was found that when T = 40, P = 90 and when T = 80, P = 100. What is the slope of the line containing these points?

Answer 1

the slope is 1/4

Explanation:

Answer 2

(40,90) and (80,100)
slope=rise/run
Slope m=y2-y1/x2-x1
Slope=100-90/80-40
Slope=10/40
Slope=1/4