If it's not what You are looking for type in the equation solver your own equation and let us solve it.
b in (-oo:+oo)
(6/7)*b-2*b+1 = 31/7 // - 31/7
(6/7)*b-2*b-(31/7)+1 = 0
(6/7)*b-2*b-31/7+1 = 0
-8/7*b-24/7 = 0 // + 24/7
-8/7*b = 24/7 // : -8/7
b = 24/7/(-8/7)
b = -3
b = -3
| 8(x)-2(0)=16 | | 8(0)-2(y)=16 | | -2a-7=-a-73/10 | | -2a-6/7=-152/63 | | -2a-3=-5 | | -2a-3=-4 | | -2a-2/3=22/3 | | -2a-2=-14/11 | | -2a-10=-34/3 | | -2a-1/5=-61/5 | | 0=-1/4(x)+2 | | -2a-1+4a=13 | | -2a+9/10=83/70 | | -2a+6=54/7 | | -2a+6=-6 | | -2a+5/7=89/7 | | -2a+4/9=6a-284/9 | | y=-1/4(0)+2 | | -2a+3/4-4/5a=-53/4 | | -2a+3+3a=3 | | -2a+2/5=-8/5 | | -2a+2/5=-4/15 | | -2a+2=-12 | | -2a+1/6=-19/30 | | 2=-3x+5 | | -1=-3x+5 | | -27=-5n+n+1 | | -26=-k+3k-2 | | -24=4x-7x+3 | | -23=3w+1/2w-9 | | -23=-2/3m-m-3 | | -23=-x+7x+1 |