SOLUTION: write an equation for the line perpendicular to y= -2/5x-4 and passes through (-3,-1)

Question 273358: write an equation for the line perpendicular to y= -2/5x-4 and passes through (-3,-1)
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
Perpendicular to y=-2/5x-4 (red line)
and passes through (-3,-1)
THIS LINE HAS A SLOPE=-2/5.
ANY PERPENDICULAR LINE WILL HAVE A SLOPE=TO THE NEGATIVE RECIPRICAL, OR 5/2.
-1=5/2*-3+b
-1=-15/2+b
b=-1+15/2
b=-1+7.5
b=6.5 ans. for the Y intercept.
Y=5X/2+6.5 (green line)
(graph 300x300 pixels, x from -6 to 5, y from -6 to 5, of TWO functions -2x/5 -4 and 5x/2 +6.5).
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