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Mathematics 21 Online
OpenStudy (anonymous):

Write the equation of the line that passes through (2, 4) and (1, -3) in slope-intercept form

OpenStudy (tkhunny):

What have you tried? Did you calculate the Slope? That's usually a good place to start.

OpenStudy (jdoe0001):

\(\bf \begin{array}{lllll} &x_1&y_1&x_2&y_2\\ &({\color{red}{ 2}}\quad ,&{\color{blue}{ 4}})\quad &({\color{red}{ 1}}\quad ,&{\color{blue}{ -3}}) \end{array} \\\quad \\ slope = {\color{green}{ m}}= \cfrac{rise}{run} \implies \cfrac{{\color{blue}{ y_2}}-{\color{blue}{ y_1}}}{{\color{red}{ x_2}}-{\color{red}{ x_1}}} \\ \quad \\ y-{\color{blue}{ y_1}}={\color{green}{ m}}(x-{\color{red}{ x_1}})\qquad \textit{plug in the values and solve for "y"}\\ \qquad \uparrow\\ \textit{point-slope form}\)

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