SOLUTION: The point (-1,2) lies on the line -bx +2y =-4 what is the value of b

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Question 1066018: The point (-1,2) lies on the line -bx +2y =-4 what is the value of b
Found 2 solutions by josmiceli, Boreal:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
( -1, 2 ) is ontheline
+-b%2Ax+%2B+2y+=+-4+
+-b%2A%28-1%29+%2B+2%2A2+=+-4+
+b+%2B+4+=+-4+
+b+=+-8+

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
substitute
-b(-1)+2(2)=-4
b+4=-4
b=-8
this is a line with slope-intercept form y=-4x-2, standard form 4x+y=-2, 8x+2y=-4. If -b=8, b=-8.