The y-intercept (b) is -1, since that is where the line crosses the y-axis. If you count the rise (which is negative) and run, you can find the slope (m=rise/run) to be -6/3, which simplifies to be -2. You can then use the slope-intercept form (y=mx+b) of the equation to get y = -2x -1
Jan 27th, 2015
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