how wud i do the following:(adsbygoogle = window.adsbygoogle || []).push({});

1.ax+by=c, y=2ax

2.y=mx+c, y=-mx+d

3.ax-by=1, y=x

4.some values for a,b and c for which equation does not represent a straight line, give egs

ive dun simpler versions of 1-3 but i haven't come across the above, so cud someone please tell me a simple method of working them out. thnx

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# Homework Help: Intersections math problem

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