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anonymous
 one year ago
Find the coordinates of the points of intersection of the line y + 2x = 11 and the curve xy=12.
Help, please. Forced to do problems with little knowledge of the subject.
anonymous
 one year ago
Find the coordinates of the points of intersection of the line y + 2x = 11 and the curve xy=12. Help, please. Forced to do problems with little knowledge of the subject.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0y=112x put in xy=12 x(112x)=12 11x2x^2=12 2x^211x+12=0 find x ,then corresponding values of y

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So, I must foil then I will get the x values, right?

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.1No and absolutely not. "FOIL" isn't a verb. It's not even a thing. Just solve the equation. You can also go the other way. xy=12 ==> y = 12/x y + 2x = 11 ==> (12/x) + 2x = 11 and solve for x.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I got x = 2/3 and x = 4. but I don't really know how to find the coordinates. My teacher didn't teach us this, she just told us we had to do these problems.

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.1The first cannot possibly be a correct solution, Lest's see how you solved either version you have been presented.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I solved what I got from the other dude, but didn't make much sense. (12/x) + 2x = 11 (12/4) + 2(4) = 11 3 + 8 = 11

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.1Have you ever solved for both solutions of a quadratic equation, or just "guess and check"?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yes, why do you ask?

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.1I ask because that leads to both solutions, rather than just one. Factoring... 2x^211x+12=0 ==> (2x  ____)(x  4) = 0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.02x3, I missed type, x = 3/2

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.1Good. There's a good thing to know, there. That '2' out in front suggests that denominators of solutions can be '2', but never '3'. Okay, we have both xcoordinates. How shall we find the corresponding ycoordinates?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I am not sure, what should I start with? Is there a certain equation I must use?

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.1Either original equation will do. Substitute the nowknown values and solve.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Are the y values 8 and 3? (3/2, 8) (4, 3)

tkhunny
 one year ago
Best ResponseYou've already chosen the best response.1There you go. No more questioning.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you so much, I was just confused about the curve and such. Didn't know if there was any additional equations or anything else that needed to be used.
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