The equation to find the slope given 2 points is (y2-y1)/(x2-x1). Lets say that (-5,-2) is x1 and y1 respectively, and (-3,-6) is x2 and y2 respectively. Now, you'd substitute these values into the equation to get [(-6)-(-2)]/[(-3)-(-5)]. When you simplify this, you get (-4/2). When you simplify this further, you get -2. Your slope is -2.
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