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 = (4/5)*(x+4) // - (4/5)*(x+4)
y-((4/5)*(x+4))-1 = 0
(-4/5)*(x+4)+y-1 = 0
y-4/5*(x+4)-1 = 0
y-4/5*(x+4)-1 = 0
y-4/5*x-16/5-1 = 0
y-4/5*x-21/5 = 0
y-4/5*x-21/5 = 0
y-4/5*x-21/5 = 0 // - y-21/5
-4/5*x = -(y-21/5) // : -4/5
x = (-(y-21/5))/(-4/5)
x = -5/4*(21/5-y)
x = -5/4*(21/5-y)
| (-9x)(2x^2-2x+1/3) | | 1/3(6x-3)1/4x-6 | | 8(5)-3(-7)=4 | | 2-5(x+2)=-8-2(x+5)+2x | | (a-3)*(a^2+3a+9)= | | y-4=8/9(x+8) | | 105+104+120+130+x=125.2 | | 105+104+120+130+x= | | y-8=7/8(x+2) | | -9y-8+3y+7=-7y+8y-5y+9 | | 10cos(x)+5=0 | | y-(-2)=(1/3)(x-2) | | 4n-2=n+10 | | -2(x+6)=5(x-3) | | -4+4x^2=-1 | | 3x-1=4(x+3) | | 2-2b=b+9 | | -4-2y=5 | | 4-2y=5 | | (2x+14)/2+1+(10-x)/5 | | -15+2y=34 | | -4x-6=-2x+12 | | 12+2y=5 | | (x+6)/2-(x-8)/3=5 | | 4/5+8=7 | | 4c+4=c-8 | | 8x-7=56x-7 | | x-2.43*(1-x)=0 | | .25(3y+2)=7 | | 5x+3+3x+5= | | r/2=5 | | 2u=16 |