Question 1177583: Please help me with geometry triangle
Triangle ABC has been rotated 90° to create triangle DEF. Write the equation, in slope-intercept form, of the side of triangle ABC that is perpendicular to segment EF. You must show all work to receive credit.
Triangles ABC and DEF are shown. A is at 4, 2. B is at 4, 5. C is at 1, 2. D is at 2, negative 4. E is at 5, negative 4. F is at 2, negative 1. Line BC and line EF intersect at point 0, 1.
Answer by MathLover1(20850)   (Show Source):
You can put this solution on YOUR website! Triangles  and  are shown.
 ( ,  )
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 (,  )
Line  and line  intersect at point ( , )
Line , , passes through (, ) and (, )
use them to find slope 
so far
line ,, passes through (, ) and (, )
Line and line intersect at point (, )=>
Line is 
line is 
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