SOLUTION: Hi can I have some help finding an equation of the line through (9, 6) and perpendicular to the line passing through (10, 4) and (-9, 0)?

Question 124578: Hi can I have some help finding an equation of the line through (9, 6) and perpendicular to the line passing through (10, 4) and (-9, 0)?
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
THE LINE PASSING THROUGH (10,4) & (-9,0) IS:
SLOPE=(0-4)/(-9-10)=-4/-19 OR 4/19
0=4/19*-9+b
0=-36/19+b
b=36/19 THUS THIS LINE EQUATION IS:
Y=4X/19+36/19 (red line)
A LINE PERPENDICULAR TO THIS LINE HAS A SLOPE=-19/4 (THE NEGATIVE RECIPRICAL OF 4/19)
THUS A LINE PASSING THROUGH (9,6) WITH A SLOP=-19/4 IS:
6=-19/4*9+b
6=-171/4+b
b=6+171/4
b=(24+171)/4
b=195/4 OR THE EQUATION IS:
Y=-19X/4+195/4 (green line)
(graph 300x300 pixels, x from -6 to 20, y from -10 to 20, of TWO functions y = 4x/19 +36/19 and y = -19x/4 +195/4).
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