Question

find the slope of the line.
gas temperature (k)
time (s)
text alternative
a) 1.7
b) 1.2

Explanation:

Step1: Select two points on the line

Let's take two points: (0, 50) and (180, 320).

Step2: Use the slope - formula

The slope formula is $m=\frac{y_2 - y_1}{x_2 - x_1}$. Here, $x_1 = 0,y_1 = 50,x_2=180,y_2 = 320$. Then $m=\frac{320 - 50}{180-0}=\frac{270}{180}=1.5$. But if we assume other approximate integer - valued points like (60, 150) and (180, 330), $m=\frac{330 - 150}{180 - 60}=\frac{180}{120}=1.5$. If we consider some rounding differences in reading points from the graph, the closest value among the options is 1.7.

Answer:

A. 1.7