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Mathematics 17 Online
OpenStudy (anonymous):

What is the Y-intercept of the linear equation represented by this table?

OpenStudy (anonymous):

\[X/ 75,100,125,150 Y/522,697,872,1047\]

OpenStudy (anonymous):

I am pretty sure that I need to graph it. Then they ask for intercept, equation, table.

OpenStudy (anonymous):

I do not remember how to get the equation

OpenStudy (saifoo.khan):

What is the equation?

OpenStudy (anonymous):

I need to get the equation after I plot the points for X and Y

OpenStudy (saifoo.khan):

Can u post the real problem?

OpenStudy (anonymous):

it is on the 1st post i did

OpenStudy (saifoo.khan):

Can u post a photo or something?

OpenStudy (saifoo.khan):

b/c this isnt clear.. sorry.

OpenStudy (anonymous):

that ok, I knew it would not make since. The problem was given on graph paper. The X's and Y's are in the column (beside each other) X Y 75 522 100 697 125 872 150 1047 hope this helps. Then in says "What is the Y-intercept of the linear equation represented by this tabled?

OpenStudy (saifoo.khan):

Awesome..

OpenStudy (anonymous):

by this table? (sorry)

OpenStudy (saifoo.khan):

i get it now.. So u have to find the equation, graph it and the intercepts?

OpenStudy (anonymous):

yes!!

OpenStudy (anonymous):

I know how the graph it, just don't remember how to get the intercept (Y) and the equation.

OpenStudy (saifoo.khan):

Alright, to find the equation, find the slope first..

OpenStudy (saifoo.khan):

\[slope= \frac{697-522}{100-75}\]\[Slope = \frac{175}{25}\]\[Slope = 7\]

OpenStudy (saifoo.khan):

Equation = y = 7x-3

OpenStudy (anonymous):

What is the equation to get the 697-522/100-75 Like M1-M2 or something like that. How did you know to pick those numbers

OpenStudy (saifoo.khan):

we can pick any two pairs.. then use the formula \[Slope = \frac{y_2-y_1}{x2-x_1}\] to find the slope

OpenStudy (anonymous):

ok that helps ALOT Thank You

OpenStudy (saifoo.khan):

x int = 3/7 y = -3

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