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amistre64
 one year ago
Best ResponseYou've already chosen the best response.1if we solve the problem: y = x^2  16; for x, what does it look like?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1and technically, there is no inverse function stated in the choices :/

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1we need to remember how to manipulate equation around to solve for a particular variable: y = x^2  16 this can be algebrated about to solve for x

missashleyn
 one year ago
Best ResponseYou've already chosen the best response.0What would I do first?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1would you agree that we can subtract 16 from each side to start to get x all alone?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1err, add 16 to each side that is

missashleyn
 one year ago
Best ResponseYou've already chosen the best response.0Yes so it would be y = x^2/16? So C?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1y = x^2  16 +16 +16  y+16 = x^2 its not C, I havent gotten to the end results yet .....

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1do you know how we can get the "^2" off the x?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1good attempt, but lets try to take the square root, or sqrt it sqrt(y+16) = sqrt(x^2) sqrt(y+16) = x this is the general construct of our inverse function we are looking for, but they like to then swap xs and ys

missashleyn
 one year ago
Best ResponseYou've already chosen the best response.0Ohhhhh so it's B then?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1B seems the most reasonable answer to me :)

missashleyn
 one year ago
Best ResponseYou've already chosen the best response.0Okay thank you! I have one more like this, could you help me with it too?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1i can take a look at it sure

missashleyn
 one year ago
Best ResponseYou've already chosen the best response.0Let f(x) = 5x + 12. Find f–1(x).

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1lets try the same process, but this one is simpler since we aint got to sqrt nothing y = 5x + 12 how do we solve for x so that x is all alone on one side of the equation?

missashleyn
 one year ago
Best ResponseYou've already chosen the best response.0 12 from each side y = 5x + 12  12  12 y  12 = 5x

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1so far so good, now to uncover the x, we should divide off that pesky looking 5 right?

missashleyn
 one year ago
Best ResponseYou've already chosen the best response.0Yes so.. y  12 = 5x  5 y  12/5 = x

missashleyn
 one year ago
Best ResponseYou've already chosen the best response.0I think I'm confusing myself

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1you did fine, lets just make sure its looks "proper" :) \[\frac{y12}{5}=x\]

missashleyn
 one year ago
Best ResponseYou've already chosen the best response.0Okay the closest choice I have to that is dw:1360095933270:dw

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1that will work fine ;)

missashleyn
 one year ago
Best ResponseYou've already chosen the best response.0Okay awesome, thank you!! :)
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