$$y=17x+4$$  

$$y-4=2\left(x-17\right)$$

$$4x+17y=0$$  

$$y=4x+17$$  

$$y\ =\frac{4}{3}x+4$$

$$y\ -4=\frac{4}{3}\left(x-2\right)$$

$$2x+4y=\frac{4}{3}$$  

$$y=\frac{4}{3}x+2$$  

$$y=-x+6$$  

$$x-y=6$$  

$$y=6x-1$$  

$$y-1=6\left(x-0\right)$$  

$$x-2y=-2$$  

$$-2x+y=3$$  

$$y=x-\frac{1}{2}$$  

$$y-1=3\left(x+2\right)$$  

$$x=4$$  

$$x=0$$  

It is not possible to write an equation.

$$y\ =\ 4$$  

$$x\ =\ 3$$  

$$x\ =-5$$  

It is not possible to write an equation.

$$y=-5$$  

$$y\ =\ 15x\ -6$$

$$y+6=\frac{1}{3}\left(x-3\right)$$

$$3x+y=-6$$  

$$y=3x-15$$  

$$y-6=\frac{1}{3}\left(x-3\right)$$

$$y=-\frac{1}{3}x+5$$  

$$\frac{1}{3}x-6y=5$$  

$$y=\frac{1}{3}x+5$$  

$$y=5x+2$$  

$$2x+7y=5$$  

$$y-7=-\frac{1}{5}\left(x+2\right)$$  

$$y=\frac{1}{5}x+2$$  

$$y=x$$  

$$y=0$$  

$$x=2$$  

$$y=1$$