If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
y = (-1/4)*x-(8/7) // - (-1/4)*x-(8/7)
y-((-1/4)*x)+8/7 = 0
(1/4)*x+y+8/7 = 0
1/4*x+y+8/7 = 0 // - y+8/7
1/4*x = -(y+8/7) // : 1/4
x = (-(y+8/7))/1/4
x = -4*(y+8/7)
x = -4*(y+8/7)
| 8b+9-5b=-29 | | -5(4y+4)-8=-8(y+6)+4y | | 4/5x=60 | | -4-9x=10x | | B=5(12-3x) | | y=-4/9x-8/9 | | r^2-4r=3c | | 7c+4c=-30 | | -4(3y+3)-14=-9(y+4)+3y | | A=9(2a+5) | | x+y=23 x-y=7 | | -2(4n-1)=12 | | 46g=4 | | 6(2+v)+39v=11v | | 5z-93=99 | | -35=-9(8d+5) | | 9(8f-7)=27 | | r+4=10 | | -212=-424 | | 4m=13.6 | | 6(5x+7)=5(6x-8) | | 3.14*0.08x^3-40=0 | | -32=3+(s+8) | | 17-x=24 | | Ps=10+3Qs | | 6(5x-7)=5(6x-8) | | pi*0.08x^3-40=0 | | x/3-2x/3= | | u^2-52u+576=0 | | 6(5x-7)=5(6x-9) | | -9(7h+4)=-18-8h | | 3×2/5 |