You can put this solution on YOUR website! Decide which variable is for which axis. Slope-intercept form equation of a line is usually the first form students learn. If you choose a for the horizontal axis and b for the vertical axis, then solving both equations for b, you have the system:
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b=2a-2
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b=(1/4)a-5
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The first equation has slope 2 and vertical intercept (0, -2);
the second equation has slope (1/4) and vertical intercept (0, -5).
Use those data to make the graph of each line.