SOLUTION: Find an equation for the line in general form Containing the points (-5, -7) and (0, 4).

Algebra ->  Finance -> SOLUTION: Find an equation for the line in general form Containing the points (-5, -7) and (0, 4).       Log On


   

Question 1069587: Find an equation for the line in general form Containing the points (-5, -7) and (0, 4).
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Use the point-slope formula
+%28+y+-%28-7%29+%29+%2F+%28+x+-%28-5%29+%29+=+%28+4+-%28-7%29+%29+%2F+%28+0+-%28-5%29+%29+
+%28+y+%2B+7+%29+%2F+%28+x+%2B+5+%29+=+%28+4+%2B+7+%29+%2F+5+
+%28+y+%2B+7+%29+%2F+%28+x+%2B+5+%29+=+11+%2F+5+
Multiply both sides by +5%2A%28+x+%2B+5+%29+
+5%2A%28+y+%2B+7+%29+=+11%2A%28+x+%2B+5+%29+
+5y+%2B+35+=+11x+%2B+55+
+11x+-+5y+=+-20+
-------------------------
check:
Does it go through ( -5, -7 ) ?
+11%2A%28-5%29+-+5%2A%28-7%29+=+-20+
+-55+%2B+35+=+-20+
+-20+=+-20+
Does it go through ( 0,4 )?
+11%2A0+-+5%2A4+=+-20+
+-20+=+-20+
OK