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Mathematics 10 Online
OpenStudy (anonymous):

Determine the equation of the function. Be sure to include the function for all values of the domain.

OpenStudy (anonymous):

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

how far did you get with this?

OpenStudy (anonymous):

i don't really get what its asking...

jimthompson5910 (jim_thompson5910):

you need to figure out the piecewise function for that graph have you learned about piecewise functions?

OpenStudy (anonymous):

is like step functions?

jimthompson5910 (jim_thompson5910):

yes it depends on which step functions you're referring to

OpenStudy (anonymous):

With Linear Functions?

jimthompson5910 (jim_thompson5910):

notice how the graph looks like it's a connection of 2 other graphs (just they haven't been fully drawn, only pieces of them have been drawn) do you see what I'm describing here?

OpenStudy (anonymous):

yup

jimthompson5910 (jim_thompson5910):

notice how the left piece is some linear equation the right piece is some different linear equation

jimthompson5910 (jim_thompson5910):

you need to find the equations of each piece

OpenStudy (anonymous):

so y=2x+3, and y=5

jimthompson5910 (jim_thompson5910):

let me check

jimthompson5910 (jim_thompson5910):

good, those pieces have restrictions do you know what I'm referring to?

OpenStudy (anonymous):

no...

jimthompson5910 (jim_thompson5910):

look at the piece on the left that is the equation y = 2x+3 is that line graphed when x is larger than 0?

OpenStudy (anonymous):

yes

jimthompson5910 (jim_thompson5910):

are you sure? you're saying that y = 2x + 3 is plotted when x is larger than 0?

OpenStudy (anonymous):

oh haha never mind! is it plotted when x is less than 0?!

jimthompson5910 (jim_thompson5910):

yes it is

jimthompson5910 (jim_thompson5910):

actually sorry, not x < 0, but x < 1 notice how the two pieces join at x = 1

jimthompson5910 (jim_thompson5910):

so the first piece is y = 2x + 3 if x < 1

jimthompson5910 (jim_thompson5910):

the second piece is y = 5 if x > 1

OpenStudy (anonymous):

thank you! :)

jimthompson5910 (jim_thompson5910):

you're welcome

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