S start a new one today. \[ \begin{array}{l}-3 x+3 y=9 \\ \text { Estimate the solution to the system of equations. } \\ \text { You can use the interactive graph below to find the solution. } \\ 2 x-7 y=-14 \\ \text { Choose } 1 \text { answer: } \\ \text { (A) } x=-1 \frac{2}{5}, y=1 \frac{3}{5} \\ \text { (B) } x=-2 \frac{2}{5}, y=1 \frac{3}{5} \\ \text { (C) } x=-1 \frac{2}{5}, y=2 \frac{3}{5} \\ \text { (D) } x=-2 \frac{2}{5}, y=2 \frac{3}{5}\end{array} \]
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Bonus Knowledge
To estimate the solution to the system of equations, you can graph the lines represented by each equation. By determining where the two lines intersect, you find the values of \(x\) and \(y\) that satisfy both equations. If you plot the first equation \( -3x + 3y = 9 \), you can convert it to slope-intercept form \( y = x + 3 \). The second equation \( 2x - 7y = -14 \) can be rearranged to \( y = \frac{2}{7}x + 2 \). The intersection point is the estimated solution. Once you have the graphical solution, you can check which answer matches the coordinates of the intersection. After plotting the lines, if the intersection appears around \( (-2.4, 2.6) \), then option (D) \( x = -2 \frac{2}{5}, y = 2 \frac{3}{5} \) would be the closest match!
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