Mathematics
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OpenStudy (anonymous):
what is the slope-intercept form of the equation y-7= -5/2(x+4)?
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OpenStudy (anonymous):
OpenStudy (anonymous):
please help
OpenStudy (anonymous):
@ganeshie8
ganeshie8 (ganeshie8):
slope intercept form :
\[\large y = mx + b\]
ganeshie8 (ganeshie8):
you just need to rearragne the given equation
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OpenStudy (anonymous):
ok can u show me how
ganeshie8 (ganeshie8):
\[ \large y-7= -\dfrac{5}{2}(x+4)\]
ganeshie8 (ganeshie8):
start by distributing -5/2 on right hand side
OpenStudy (anonymous):
ok
ganeshie8 (ganeshie8):
you get :
\[ \large y-7= -\dfrac{5}{2}*x- \dfrac{5}{2}*4\]
\[ \large y-7= -\dfrac{5}{2}x- 10\]
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ganeshie8 (ganeshie8):
next, add 7 to both sides
what do you get ?
OpenStudy (anonymous):
what do you mean add to add 7 to both sides
ganeshie8 (ganeshie8):
\[ \large y-7\color{red}{+7}= -\dfrac{5}{2}x- 10\color{Red}{+7}\]
OpenStudy (anonymous):
ok
ganeshie8 (ganeshie8):
simplify
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ganeshie8 (ganeshie8):
-7+7 = ?
OpenStudy (anonymous):
0
ganeshie8 (ganeshie8):
so you get :
\[ \large y= -\dfrac{5}{2}x- 10\color{Red}{+7}\]
ganeshie8 (ganeshie8):
whats the value of -10+7 ?
OpenStudy (anonymous):
-3
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ganeshie8 (ganeshie8):
good, you're done. the slope intercept form is
\[ \large y= -\dfrac{5}{2}x-3\]
OpenStudy (anonymous):
so the awnser is d
OpenStudy (anonymous):
thx