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anonymous
 5 years ago
at what vale of x is the line tangent to the graph of y=x^2+3x+5 perpendicular to the line x2y=5
anonymous
 5 years ago
at what vale of x is the line tangent to the graph of y=x^2+3x+5 perpendicular to the line x2y=5

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bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0find the derivative: y = 2x + 3 Slope is 2 in second case slope is: 2y = x+5 y = 1/2 x 5/2

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0in second case slope is 1/2, so: 1/2 = 2x + 3

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.01 = 4x + 6 5 = 4x x = 5/4, check my arithmetic and answer.. but that was right lol

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0i just didnt finish it..

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that is not a choice. the choices are 5/2, 2, 1/2, 1/2, and 5/2

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0oh sorry its not supposed to be 1/2 = 2x + 3 because we are looking for perpendicular so: 2 = 2x + 3 5 = 2x x = 5/2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0alright ty again ignore this it just helps me to type it out. find the slope of first line and plug it into the y for the second line and solve for x
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