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The equations 𝑥 + 𝑦 = 3 and −5𝑥 − 5𝑦 = −15 are graphed in the xy-plane. Which of the following must be true of the graphs of the two equations?A. Theslopeofthegraphof 𝑥+𝑦=3 is1andtheslopeofthegraphof−5𝑥−5𝑦=−15 is−1.B. The graphs of the two equations are perpendicular lines.C. The y-intercept of the graph of −5𝑥 − 5𝑦 = −15 is −15.D. The graphs of the two equations are the same line.

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