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anonymous
 one year ago
Solve the system y = x + 7 and y = 0.5(x  3)^2 + 8. With an explanation would be good! :)
anonymous
 one year ago
Solve the system y = x + 7 and y = 0.5(x  3)^2 + 8. With an explanation would be good! :)

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dakid88
 one year ago
Best ResponseYou've already chosen the best response.0x means that and do not represent the same math object (Both symbols do not have the same value). (The forms !=, /= or <> are generally used in programming languages where ease of typing and use of ASCII text is preferred.) x ≈ y means x is approximately equal to y.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So, how would I solve this? Would i substitute y=x+7 into the second equation?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1yes do the substitution and solve for x

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1with the calculated value for x then put in either original to find y

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1solving the system means you are finding the (x, y) set that satisfies both equation

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay. I ended up with y=0.5({x+7}3)^2+8. Is that correct?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1441813046839:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1@dakid88 no that is not correct

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1@Dancingnerd can you continue?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Um. I think so. Then, do i just solve from here?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I ended up with x = 0.5x^2.. It doesn't seem right.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1@Dancingnerd do you understand why your expression was wrong?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh. It should be x = 0.5x^2.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1really? how will that give you the value for x ? did you compute that fast?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What do you mean? I think I confused myself.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1what equation did you use?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I used x+7=0.5(x3)^2+8.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay, so how do I solve?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1start with the right hand side expand the "exponents" then parenthesis

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1simplify you will get a quadratic to factor

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1I have x = 7, x = 1 then find the corresponding values for y

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0(7, 0) and (1,6) are the points. Is that correct?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0That's what I meant. That was the answer that I got.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you so much! I would have never been able to solve that myself.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm still a bit unsure how you got x=7 and x = 1.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1do you follow the directions starting with the right hand side after setting the y's equal? simplify to the quadratic I used x^2  8 x + 7 = 0

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think that was where I messed up.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1do you understand the process? will you be able to do one by yourself now?
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