For 1-4 lets use the rise over run method to find the slopes and the y intercepts are on the graph.
1. Rise 2: Run -1
So the slope is -2/1x and the y-intercept is (0,1)
2. Rise 1: Run 1
So the slope is x (1x) and the y-intercept is (0, -15)
3. Rise 3: Run 2
So the slope is 3/2x and the y-intercept is (0, -2)
4. Rise 1: Run -1
So the slope is -x (-1x) and the y-intercept is (0, 9)
Now for the tables. To find the slope from a table, it is change in y / change in x
To find the y intercept, look for when x = 0.
5. Change in y = 6 : Change in x = 2
So the slope is 3x and the y-intercept is 1
6. Change in y = -20: Change in x = 5
So the slope is -4x and the y-intercept is 140
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