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16-05-2018
Mathematics

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what is the point slope form of a line with a slope 4/5 that contains the point (-2,1)

what is the point slope form of a line with a slope 45 that contains the point 21 class=

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17-05-2018

[tex]Use:\ y-y_1=m(x-x_1)[/tex]

[tex]We\ have:\\\\m=\dfrac{4}{5}\\\\(-2;\ 1)\to x_1=-2\ and\ y_1=1[/tex]

[tex]Substitute:\\\\y-1=\dfrac{4}{5}(x-(-2))\\\\\boxed{B.\ y-1=\dfrac{4}{5}(x+2)}[/tex]

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