C3H5(NO3)3 Posted May 13, 2005 Share Posted May 13, 2005 Oh boy here we go....writing straight line equations from y=mx+b to standard form (Ax+By+C=0) y=mx+b i know that y=-1/2 m=1 and x=4 .:. -1/2=(1)(4)+b -1/2=4+b find common demoninator and multiply it by all 2(-1/2) = 2(4)+2(b) -1=8+2b isolate b -2b=8+1 -2b=9 b= -9/2 as a rule though....no fractions in final answer get everything on one side 0=x-y-9/2 common demoninator, multiply it by all 2(0)=2x-2y-2(9/2) 0=2x-2y-9 just switch so =0 is on right side....neater 2x-2y-9=0 Eh? Did I do it right...I think I did....this is how we were taught...sorry it's long I know.... Link to comment Share on other sites More sharing options...
6431hoho Posted May 14, 2005 Share Posted May 14, 2005 It's perfect except that it's a little unorganized unless that's how your teacher wants it. Link to comment Share on other sites More sharing options...
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