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Mathematics 14 Online
OpenStudy (accidentalaichan):

How do I give the slope for this equation?

OpenStudy (accidentalaichan):

\[y = \frac{- 3 }{2 }x +4\] The y intercept is 4, so how do I find the slope?

hartnn (hartnn):

the slope of y=mx+c is just the 'm' so, what about your equation ?

OpenStudy (accidentalaichan):

so, \[\frac{ -3 }{ 2 }\] is m?

hartnn (hartnn):

coorect! thats your slope :)

OpenStudy (accidentalaichan):

would it look like this on the graph?

OpenStudy (accidentalaichan):

|dw:1379462837246:dw|

hartnn (hartnn):

thats just a point, you need to graph the line, right ?

OpenStudy (accidentalaichan):

yes

hartnn (hartnn):

do you know how to ? have u graphed the line before ?

hartnn (hartnn):

you have y-intercept as 4 , so (0,4) can u find x-intercept ?? hint: put y=0 in the equation

OpenStudy (accidentalaichan):

No, I'm afraid not

hartnn (hartnn):

to find x-intercept put y=0 in the equation what u get ?

OpenStudy (accidentalaichan):

\[\frac{ -3 }{ 2 }x+4\] Then, -3 divided by 2, so I get -1.5 + 4. So... 2.5?

hartnn (hartnn):

0 = -3/2 x +4 so, 3/2 x = 4 x= 4*2/3 = 8/3 right ?

OpenStudy (accidentalaichan):

Wait, how did -3 turn into a positive?

hartnn (hartnn):

by adding -3/2x on both sides so, in right side ,0 +4, left side +3/2x

OpenStudy (accidentalaichan):

oh, I get it now.

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