the required slope of the line is -5 / 3.
Given that,
To determine the slope of the line passing through the pair of points (0, 15), (9, 0).
The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.
Here,
Slope of line(m) = [y₂ - y₁] / [x₂ - x₁]
We have points (0, 15), (9, 0).
now,
m = 0 - 15 / 9 - 0
m = -15/9
m = -5/3
Thus, the required slope of the line is -5 / 3.
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