Question 380569
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Hi,
Note: The standard slope-intercept form for an equation of a line: y = mx + b  
where m is the slope and b the y-intercept.  in this ex m = -4
y = -4x + b  using ordered pair Pt(8,9) to solve for b
9 = -32 + b
41 = b  y = -4x + 41
{{{drawing(300,300, -50,50,-50,50,grid(1),
circle( 8, 9,1.8),
circle(0, 41,1.8),
graph( 300, 300, -50,50,-50,50,-4x + 41))}}}