Answer:
slope = 2
equation: y = 2x - 2
a = 5
b = 6
Explanation:
First, you need to get the points' coordinates correctly.
The points starting from the lowest one and going up to the right along the line are:
(2, 2), (3, 4), (4, 6), (5, 8), (6, 10)
The coordinates of the points on the graph are not all correct.
To find the equation of the line, use two points.
Let's use (2, 2) and (6, 10).
slope = m = (y_2 - y_1)/ (x_1 - x_1) = (10 - 2)/(6 - 2) = 8/4 = 2
slope = 2
y = mx + b
Use m = 2, and point (2, 2).
2 = 2(2) + b
2 = 4 + b
b = -2
Equation:
y = 2x - 2
Point (a, 8) = (5, 8)
a = 5
Point (4, b) = (4, 6)
b = 6