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manamesasher
 2 years ago
Solve the following system of equations graphically, find the graph
2x y = 1
x + y = 2
manamesasher
 2 years ago
Solve the following system of equations graphically, find the graph 2x y = 1 x + y = 2

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Calcmathlete
 2 years ago
Best ResponseYou've already chosen the best response.3Easiest way to do this is to plug in the point of intersection and if both equations are true, then it's the correct answer. For instance, let's check 2. \[2x  y = 1\]\[2(1)  (1) = 1\]\[2 + 1 = 1\]\[3 ≠ 1\]THerefore, it isn't 2.

manamesasher
 2 years ago
Best ResponseYou've already chosen the best response.0i was talking about the graph...

Calcmathlete
 2 years ago
Best ResponseYou've already chosen the best response.3Also, if the point of intersection is the same in two choices, then you have to make sure the lines make sense.

Calcmathlete
 2 years ago
Best ResponseYou've already chosen the best response.3And yes, 2 is incorrect since the solution set is also the point of intersection when graphed...

Calcmathlete
 2 years ago
Best ResponseYou've already chosen the best response.3Are you just guessing at this point?

manamesasher
 2 years ago
Best ResponseYou've already chosen the best response.0no i'm asking if you can help me solve it...

Calcmathlete
 2 years ago
Best ResponseYou've already chosen the best response.3Alright. I explained the process above... Let's take a look at choice 3... 2x  y = 1 Plus in the point of intersection, (1, 1) 2(1)  (1) = 1 2  1 = 1 3 ≠ 1 Do you see how the final equations ends up false since 3 does NOT equal 1?

manamesasher
 2 years ago
Best ResponseYou've already chosen the best response.0ok. and choice 1, (1, 1) 2(1)(1)=1

manamesasher
 2 years ago
Best ResponseYou've already chosen the best response.0so it is choice 1..

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1my idea would be to use a knowledge of the equations to match the graph in this manner x + y = 2 notice this is pretty easy to turn to y = mx+b format y = x2 we need to find an option that has a line going thru y=2 and a downill slope of 1

Calcmathlete
 2 years ago
Best ResponseYou've already chosen the best response.3Um... \[2(1)  (1) = 1\]\[2 + 1 = 1\]\[1 = 1\]You should always check both equations by the way for the future, but it is indeed choice 1 :)

manamesasher
 2 years ago
Best ResponseYou've already chosen the best response.0oh, ok sorry.. thanks again...

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.11 and 3 fit the thru 2 part; and 3 is too steep for comfort
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