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Mathematics 20 Online
OpenStudy (anonymous):

what is the slope-intercept form of the equation y-7= -5/2(x+4)?

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

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 : \[ \large y-7= -\dfrac{5}{2}*x- \dfrac{5}{2}*4\] \[ \large y-7= -\dfrac{5}{2}x- 10\]

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

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

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

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