Arturo O. answered • 05/25/20
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The product of slopes of perpendicular lines is -1.
m1 = [-4 - (-1)] / [-2 - (-1)] = ?
m2 = (-2 - c) / (6 - 3) = ?
m1m2 = -1
Plug in the numbers and solve for c.
Arturo O.
Check you math. m1=3. m2=-(2+c)/3, m1m1=-1=-(2+c), c =?
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05/25/20
Ghaith A.
I don't understand it. can you please clarify it a bit more if you can. thank you for trying to help me out by the way.
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05/25/20
Arturo O.
I gave you all the relevant equations step by step, with all the numbers in the equations. At this point, you just have to do the arithmetic.
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05/25/20
Ghaith A.
c= -1 and then I plugged it into the formula and got 1/-3 which is the right answer. but i have a question so i know how to do this later on by myself. in this problem you used the formula y1-y2 / x1-x2 why didn't you use any other one. and where did this negative at the start of -(2+c) come from? thank you for helping me out . it's good to see that there is people who are helping others still.
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05/25/20
Arturo O.
Your first question: If you are given 2 points, you have x1,y1,x2,y,2, so (y1-y2)/(x1-x2) is the natural formula to use. Second question: When you calculate m2, you should get m2=(-2-c)/3=-(2+c)/3.
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05/25/20
Ghaith A.
I have done that and it always came out as -11 and I am not sure if that is right..05/25/20