Answer:
-44
Step-by-step explanation:
The slope of the line passing through two points (x₁, y₁) and (x₂, y₂) is given by (y₂ - y₁)/(x₂ - x₁)
Therefore the slope of the given line k = (10-4)/(9-8) = 6
In the slope intercept equation, y = mx + b, m is the slope and b is the y intercept
Substituting for m we get the line equation as
y = 6x + b
Substitute any one of the points in this equation. Let's use point(8,4) ie x= 8, y =4
we get
4 = 6 x 8 + b
which gives b = 4-48 = -44
