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)
3.5*y = (4/9)*x-6 // - (4/9)*x-6
3.5*y-((4/9)*x)+6 = 0
(-4/9)*x+3.5*y+6 = 0
3.5*y-4/9*x+6 = 0 // - 3.5*y+6
-4/9*x = -(3.5*y+6) // : -4/9
x = (-(3.5*y+6))/(-4/9)
x = 9/4*(3.5*y+6)
x = 9/4*(3.5*y+6)
| 5x+6-8x-8=4x+2 | | 26x-11-17x=3(3x-5)+4 | | 4(x+6)=2x+12 | | -7/8-(-x)=-7/12 | | 2+z=6z^2 | | 34=2x-4(2x+8) | | 2+z=6x^2 | | (3x+2)(x)=16 | | 9x+6-8x=14 | | -28+x=x+26 | | x^2+56x+840=0 | | 5x+6-8(x+1)=4x+2 | | x^2+56x-24=0 | | 13x-4=8x+21 | | (y/95)+85=84 | | 8x+8(8)=64 | | 6x+5y=-9 | | 5x+2(-2x+6)=21 | | 2/5+x=1/3 | | -13=5(4m+1)-2m | | 14,482/3 | | 8(-8)+8y=64 | | x^2-50x-51=0 | | 4.6-(-x)=-0.4 | | -4x+7=-11 | | 7s+s=414 | | -b+10=b+4 | | 7+14s-5=6s+50-4s | | 19-47=4(x-1)-4 | | 3x+7(-3x+4)=136 | | 9=7m-5 | | x((x^2)+5x-16)=-80 |