Find the slope of the line passing through the points (-4,-3) and (8,-9)
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First you take a protractor and a pencil
next, you draw a horizontal line (red)
then find the value of the angle, and draw a line with the matched value (green)
please look at the image
next, you draw a horizontal line (red)
then find the value of the angle, and draw a line with the matched value (green)
please look at the image
First we need to find ∡PRQ. To do this we can use the fact that the sum of the interior angles of a triangle is 180°:
Now, we can use the fact that a strait line (like SRQ) is also 180°:
°
Now, we can use the fact that a strait line (like SRQ) is also 180°: