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anonymous
 one year ago
Write the equation of the line that passes through the point (1,3) and is perpendicular to the line y = 1/2x  1
anonymous
 one year ago
Write the equation of the line that passes through the point (1,3) and is perpendicular to the line y = 1/2x  1

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texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0can you tell me the slope of this line ? y = 1/2x  1 ??

texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0In y = mx + b form, the slope is in the m position...so the slope of this line is 1/2. Do you understand that ??

texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0but we are looking for a perpendicular slope....and perpendicular slopes have negative reciprocal slopes. All that means is we are going to have to " flip " the slope and change the sign. That is the negative reciprocal. So lets flip the slope and change the sign....1/2....neg reciprocal is 2/1 or just 2. So our perpendicular line needs to have a slope of 2. Do you understand so far ??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes. With the slope being 2 do you go to find the yintercept next?

texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0yes... use y = mx + b slope(m) = 2 (1,3)...x = 1 and y = 3 now we basically sub in our info and solve for b....can you do that ?

texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0In y = mx + b, the b stands for your y intercept

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0where did you get the (1,3)?

texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0those are your points given in your original question.

texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0do you need help in setting up the equation ?

texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0y = mx + b slope(m) = 2 (1,3)...x = 1 and y = 3 now we sub and find b, the y intercept 3 = 2(1) + b 3 = 2 + b 3 + 2 = b 5 = b have I lost you yet ??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0No, i understand what you did there.

texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0so we know out slope (m) is 2 and our y intercept (b) is 5... so your perpendicular line passing through (1,3) is : y = 2x + 5

texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0if you have any questions please ask them now :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you so much! I actually understand how to do it now? Is it the same working out process with parallel?

texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0not quite....parallel lines will have the same slope. So if you were looking for a parallel line .....your slope would be the same as in the original line....your parallel slope would be 1/2....but for perpendicular, you need negative reciprocal slopes...thats when you flip the slope and change the signs.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ok now i get you. You keep the same but still do the sub in stuff to still find b..right?

texaschic101
 one year ago
Best ResponseYou've already chosen the best response.0yep ^^...thats right :)
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