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 = (-4/9)*x-0.8 // - (-4/9)*x-0.8
y-((-4/9)*x)+0.8 = 0
(4/9)*x+y+0.8 = 0
4/9*x+y+0.8 = 0 // - y+0.8
4/9*x = -(y+0.8) // : 4/9
x = (-(y+0.8))/4/9
x = -9/4*(y+0.8)
x = -9/4*(y+0.8)
| 4cos^2(x)-4cosx+1=0 | | -16+4x=-32+18x | | -5(3n-5)=30 | | 4a-6b=0 | | 4cos^2(x)-4cos(x)+1=0 | | x^2=5(x-3) | | -10=15x-(9x-1) | | s+11=42 | | 3r=59 | | 37-2x=13-8x | | 30=8+x | | -5x+48=8 | | lg(25x)=0 | | 8x-(3+6x)=36 | | x^2-10x+146=0 | | 1x/4=7/12 | | X-9+x= | | -28=16x-(8x-11) | | log(25x)=0 | | 24-16x+20x-9=31 | | 5x+1=35-x | | y(t)=5+10cos(30t)+15cos(90t) | | -2(2m+-1)+4m= | | -28=18x-(3x-9) | | 8z+17=7z+10 | | 3y+y+88=180 | | 0.6(3x+9)=2.5-(x-3) | | 4m-5=2+m | | 2+10x=-7+x | | -7=3-(5-b) | | 6x+35+8x-23=180 | | 18x-4x-12-10=26 |