Question 843208
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Hi,
***Using point-slope form, 
{{{y - y[1] = m(x - x[1])}}}
(y-1)= -1(x-5)
  y-1 = -x + 5
   y = -x + 6    | y-intercept is 6
    the standard slope-intercept form for an equation of a line is {{{y = green(m)x + b}}}
  where m is the slope and b the y-intercept.
{{{drawing(300,300,   -6, 6, -6, 8, grid(1), 
circle(0, 6,0.2),
circle(1, 5,0.2),
graph( 300, 300, -6, 6, -6, 8,0, -x+6))}}}