exam Maths Puzzle Numerical Ability

givin points C (4,3) and S (5,1) find the sope of every perpendicular to RS
how do i do that??!?!

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exam Other Question

ive been havgin hard time trying to solve this equation, i dont know how to.

V - 1.58 = 2.76

thanks! =)
given the equation y=-5x+1

a. find the slope of a line parallel
b. find the slope of a line perpendicular
c. graph a parallel line that goes throught the point (4,-1)