Question 1083687
Diagonal one goes from D to B and has a slope of 1
point slope formula y-y1=m(x-x1), m slope and (x1,y1) coordinate
y-3=1(x-3)
y=x
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Other diagonal goes from upper left to lower right and has a slope of -1
y-3=-1(x+3)
y=-x
Standard form is x-y=0 for one line and x+y=0 for the other
{{{graph(300,300,-3,3,-3,3,x,-x)}}}