Pre Calculus
posted by Joseph .
please help me with this problem? I don't know how ro do it. please show me step by step.
Write the slope intercept form the equations of the lines through the given point parallel to the given line and (B) perpendicular to given line.
point slope
((7,2) m= 1/2

Let me change the problem. Find a line perpenduclar to a line thrue 4,5 and having slope 4
new slope of perpendicular line..1/4
y=mx + b
5=(1/4)4 + b
b=6
y=(1/4)x+ 6 is the equation. 
thanks now i get it

Lowest terms
4x+12/5x^2 + 21x + 18
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