20 is the slope and 30 is the y-intercept
Answer:
Slope of the line = 2
Step-by-step explanation:
Slope of a line through two points lying on the line
and
is given by,
Slope = 
From the figure attached,
Given line is passing through two points (0, 1) and (1, 3).
Therefore, slope of the line will be,
Slope = 
= 2