Answer:
Vertical change = 4
Horizontal change = 1
Slope = 4
b (y-intercept) = 2
Explanation:
From the graph (notice it as also marked with an arrow) you can get the value of "b" (also called the -intercept) is "2"
Please notice that you have entered wrong values for the slope.
By using the points (0, 2), and (1, 6) which are marked on the graph, you estimate the slope doing:
slope = vertical_change / horizontal_change = (y2 - y1) / (x2 - x1)
in our case, the vertical change (y2 - y1) is : 6 - 2 = 4
The horizontal change is (x2 - x1) = (1 - 0) = 1
Then the slope is: 4 / 1 = 4
slope = 4
and "b" (or y-intercept) is 2