1. what is the slope of the line ? -2 -1 1 1

The slope of a line is measured by the “rise”/“run.” The rise is your “y” coordinate, and the run is your “x” coordinate.

Looking at this graph, if we start at (0,0) and move 1 point to the left, our new coordinates are (1,-2). If we move 1 point to the left again, our new coordinates are (2,-4). We only need two sets of coordinates to calculate our slope.

The formula to calculate the slope of a line is:

(y2 - y1)/(x2-x1)

Now, all we have to do is plug in our coordinates, so:

(-4 - -2)/(2 - 1)
(-2)/(1) = -2

The slope of the line is -2.

First one is 1 second one is 3

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