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Mathematics 19 Online
OpenStudy (anonymous):

For the function whose graph is shown below, which is the correct formula for the function?

OpenStudy (anonymous):

OpenStudy (cwrw238):

first find the slope of the line : - rise/run m then find the y intercept b the equation will be y = mx + b

OpenStudy (cwrw238):

at what value of y does the line cross the y-axis? ( that the y intercept)

OpenStudy (anonymous):

It crosses at 1, right?

OpenStudy (anonymous):

Oops, wrong graph hang on

OpenStudy (anonymous):

Does it cross at -2?

OpenStudy (cwrw238):

yes it crosses the y-axis at -2 (it crosses the x-axis at 1)

OpenStudy (cwrw238):

so b = -2

OpenStudy (anonymous):

Alright..Okay, I understand that part.

OpenStudy (cwrw238):

now the slope of the line is positive ( it goes like /)

OpenStudy (anonymous):

Yes

OpenStudy (cwrw238):

If you take the point (3,-4) and count up the squares until you get to the graph then count from (3.-4) to the left until the graplhyou'll get the slope

OpenStudy (cwrw238):

|dw:1418055254523:dw|

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