Question 515071
Graph each set of lines. then: A. identify two congruent triangles that are formed by the lines. b. write a paragraph proof to justify your statement in part A. 

y=3 y=2x+1
y=-1 y=-2x+1
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Is this one problem or 2?  You say "each set", which implies 2 problems, each with 2 lines.
2 lines don't make any triangles, congruent or not.