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 = (-2/1)*x-(4/1)-1 // - (-2/1)*x-(4/1)-1
Y-((-2/1)*x)+4/1+1 = 0
Y+2*x+1+4 = 0
Y+2*x+5 = 0 // - Y+5
2*x = -(Y+5) // : 2
x = (-(Y+5))/2
x = (-(Y+5))/2
| M=-18x^3+910x^2-9611x+48912 | | 3((22.5)+2)= | | 300X^2=24.45X | | 1/2x2y=12 | | 2.5x-1=2.5x+2 | | 3(4-2x)=4x+8 | | 7(x-7)+7=-42 | | 6x+12y=10 | | X2_5/9x_27 | | 47-3x= | | log2/(log1.043) | | 28-6x=-50 | | Y=-4(-11)-16 | | 6a+2o=9a-42 | | 0.6x+5=0.4x-2 | | 2x+5-3x+8=22 | | y=45b^3 | | 7/4=1/2x | | 21x^2-63x=0 | | -16t^2+28t-4=0 | | 12-2w=2(7-w) | | -25/6-1 | | -21/8-1 | | -3(4b-10)=-12b+30 | | t-5/6=7/6 | | 2p^2+11q-21=0 | | 4x^2-5(5)=32 | | Log[3](10x)=5 | | 82-2x=90 | | Log(f-3)=log(17-4f) | | 17x+3y=45.80 | | 0.2+x=1 |