<PRE><B>Question 161825</B>
Perpendicular to g(x)= 5x-3 (red line) and contains the point (7,4).
A line perpendicular to this line has a slope=-1/5.
Y=mX+b
4=-1/5*7+b
4=-7/5+b
b=4+7/5
b=(20+7)/5
b=27/5 for the y intercept.
y=-x/5+27/5 (green line).
{{{ graph( 300, 300, -10, 10, -10, 10, 5x -3, -x/5 +27/5) }}} (graph 300x300 pixels, x from -10 to 10, y from -10 to 10, of TWO functions 5x -3 and -x/5 +27/5). </PRE>