Question 409472
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Hi, Previously posted.
graph Line with slope m = -1, passing thru Pt(-2,5)
 y = mx + b   |Yes
 5 = -2(-1)+ b  |good work, using ordered pair Pt(-2,5) to solve for b
 3 = b        |Yes
 y = -x + 3  | y-intercept is Pt(0,3)
Note m = -1/1: 
as y increases/decreases by 1, x increases/decreases by 1 in opposite direction
Thus Pt( 1,2) and Pt(-1,4) on this line.  Plotting and connecting with a line:
{{{drawing(300,300,   -6, 6, -6, 6,  grid(1),
circle(0, 3,0.3),
circle(1, 2,0.3),
circle(-1, 4,0.3),
graph( 300, 300, -6, 6, -6, 6,-x+3))}}}