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Which of the following equations represents a line through the points?

Which of the following equations represents a line through the points?-example-1
User Pmartin
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1 Answer

6 votes

In order to find the equation of the line, using the points given to solve the slope of the line


m=(y_2-y_1)/(x_2-x_1)
\begin{gathered} m=(13-9)/(3-2) \\ m=(4)/(1) \\ m=4 \end{gathered}

then, using one of the points find the y-intercept


\begin{gathered} y=4x+b \\ 9=(4)(2)+b \\ 9=8+b \\ b=9-8 \\ b=1 \end{gathered}

The equation of the line is


y=4x+1

User Sergei Sirik
by
6.8k points
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