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anonymous
 5 years ago
If I wanna find where to equations intersect how do I do that?
anonymous
 5 years ago
If I wanna find where to equations intersect how do I do that?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0solve each of them for the same variable. then set them equal to each other

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you look it where the cross at when you plotted it which corrdinates are the same

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0its realted to streets

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Could I also make a table?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0do to tbles then see which corrdinates where the same from both eqautions

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0and sometimes if the the point is not a pretty number like 2 or 4 and its something like 2.334 then its hard to get an estimate

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0or do rise over run first you have to find the y intersept then rise 2 and run 1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Okay so my equations are y=4x3 and y=9x13

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0say you have \[y= m _{1} \times x _{1} + b _{1}\] \[y= m _{2} \times x _{2} + b _{2}\] you set the y together and solve for x \[ (m _{2} \times x _{2}) + b _{2}= (m _{1} \times x _{1}) + b _{1}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You can do it various ways. 1. graph (but as you say if it isn't perfect then it doesn't work) 2. Substitution method 3. Addition method

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0in your case you will have \[4X3= 9X 13\] add 13 to both sides \[4X3+ 13= 9X 13+ 13\] \[4X+10= 9X\] subtract 4X to both sides \[4X4X+10= 9X4X\] \[10= 5X\] you want to get x by itself so divide 5 to both sides \[2= X\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0y = 4x  3 y = 9x  13 put in what y = in the second equation into the 1st equation 9x  13 = 4x  3 subtract 4x from both sides 5x  13 = 3 5x = 10 x = 2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You are not done yet you want to find the point (x, y) and you have x so just plug in x to either function and you get the values for y
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