A calculator for determining the slope of a road is located here.

Distance= Slope= Angle= Equation=

(If we needed to calculate the slope angle we merely take the arc tangent of the slope. In this case, arc tangent(.5) = 26.565...degrees).

We can now formulate a linear equation, the standard form of which is:

As a double check, we can use the other point (5,4) and get b= 4 -.5*5 = 4 -2.5 = 1.5 So, the equation shown in the above graph is:

In order to find the distance between the two points, we utilize the above formula which is based upon the Pythagorean Theorem,:

Example: A line has a slope of 9 and passes through the point (7,5). What is the equation? We can calculate "b" from this equation:

Then, we enter the value of "b" and the slope into this equation:

Use this example in the calculator below.

Equation= Angle=

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