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-7 = (1/8)*(x+9) // - (1/8)*(x+9)
y-((1/8)*(x+9))-7 = 0
(-1/8)*(x+9)+y-7 = 0
y-1/8*(x+9)-7 = 0
y-1/8*(x+9)-7 = 0
y-1/8*x-7-9/8 = 0
y-1/8*x-65/8 = 0
y-1/8*x-65/8 = 0
y-1/8*x-65/8 = 0 // - y-65/8
-1/8*x = -(y-65/8) // : -1/8
x = (-(y-65/8))/(-1/8)
x = -8*(65/8-y)
x = -8*(65/8-y)
| 6(6+7x)=2x+46 | | 2/7=x/6 | | 4(2x^2+x)-6(x^2-7)= | | -2/3/-1/8 | | -2(x-0.06)=-.04 | | -9=4(x-4)+2x | | (5x-7)(x+2)(x+2)= | | -2x+3x=25 | | t+t=12 | | 9=3(x+9) | | -0.32+0.48= | | 5/6x-9 | | 0.2j-0.04+0.5j=0.31 | | (5x+7)(x+2)(x+2)= | | 3*(a+7)=51 | | -5c+10c=100 | | 43=7 | | -2.5(x-0.05)=-.2 | | 1/7x-3=-6/7 | | N/3=48 | | (8+-4x+x^2)(x-3)(x-2)=0 | | X^2-9x+-22=0 | | 4+2x=4x+8 | | X^4-9x^2-2x^3+18x-3x^2+27=0 | | 5.08x+81=25.8064+9x | | (a+7)=51 | | -4x+2(x-5)=-16 | | 15u^2-31u+10=0 | | 126.2/2=x/189.3 | | -2(-3x-5)+1=7x+11-x | | 2(y-1)=6y-34 | | 0.75x+.25y=30 |