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lexy148
 one year ago
How do you graph and solve for y= square root x2 if the x points are 0,1,2,1,2
lexy148
 one year ago
How do you graph and solve for y= square root x2 if the x points are 0,1,2,1,2

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0is the equation this? \[\Large y = \sqrt{x2}\] or this?\[\Large y = \sqrt{x}2\]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0if we replace x with 0, what result do you get \[\Large y = \sqrt{x2}\] \[\Large y = \sqrt{02}\] \[\Large y = ???\]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0you'll have \[\Large \sqrt{2}\] BUT you cannot take the square root of a negative number. The result isn't a real number. So the calculator should say NAN or undefined or something

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0did you type in `sqrt(02)` or `sqrt(2)` into your calculator?

lexy148
 one year ago
Best ResponseYou've already chosen the best response.0yeah thats what it said when i did it in the calculator

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0so because of this error, we don't include x = 0 in the domain

lexy148
 one year ago
Best ResponseYou've already chosen the best response.0i typed sqrt 2 not 02

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0which calculator are you using?

lexy148
 one year ago
Best ResponseYou've already chosen the best response.0we wouldnt include any negative numbers in sqrt then

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0yes you cannot have negative numbers under the square root eg: \(\Large \sqrt{1}\) is not allowed

lexy148
 one year ago
Best ResponseYou've already chosen the best response.0a scientific calculator

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0ok, what happens when you replace x with 1 instead of 0? what result do you get?

lexy148
 one year ago
Best ResponseYou've already chosen the best response.0ok so i wot put any negatives then thx

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0the goal is to have x2 never be negative so we can force it to be 0 or positive, ie force it to be greater than or equal to 0 \[\Large x2\ge 0\] solve for x to get \[\Large x\ge 2\] so you are allowed to input values of x that are either 2 or larger than 2

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0you'll find that \[\Large \sqrt{3}\] isn't a real number. So x = 1 isn't allowed to be an input either

lexy148
 one year ago
Best ResponseYou've already chosen the best response.0ok i see so only numbers 2 or more, no negatives

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0if x = 2, then what is the value of y?

lexy148
 one year ago
Best ResponseYou've already chosen the best response.0ok thank you and how would you sqrt 0 since 22 is 0

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0the square root of 0 is 0

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0your calculator should be able to calculate that if not, then use this calculator http://web2.0calc.com/

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0ok one more: if x = 6, then what is the value of y?

lexy148
 one year ago
Best ResponseYou've already chosen the best response.0thank you for helping me :)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0the `x2` part is 4 when x = 6 but I want the value of y \[\Large y = \sqrt{x2}\] \[\Large y = \sqrt{62}\] \[\Large y = \sqrt{4}\] \[\Large y = ??\]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0correct, so when x = 6, the value of y is y = 2 that means we have the point (6,2) earlier you found that when x = 2, the value of y was y = 0 so the point (2,0) You make a table of x,y values and plot each ordered pair as a point on the xy grid. Once you have enough points, you can draw a curve through them all to complete the graph
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