Question 143227
No need to stress. You're getting it!

As far as finding a second point, setting x = 0 won't help since that is that the y intercept is. You need to get 'another point'.

Usually an easy second point is to set y = 0, then find x.
For this is would be {{{y = (1/4)x + -5 }}}
{{{0 = (1/4)x + -5 }}}
{{{5 = (1/4)x }}}
{{{20 = x}}}

{{{graph (600, 400, -20, 20, -20, 20, x/4 - 5 ) }}}