document.write( "Question 258098: Determine which of the ordered pairs does NOT lie on the graph of the function
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document.write( "f(x)= - 2x + 5
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document.write( "A. (1,3)
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document.write( "B. (5, -5)
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document.write( "C. (4, -3)
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document.write( "D. (0,4)
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document.write( "Please solve & explain this so I can solve the other 14 answers.
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document.write( "Thank you
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document.write( "Dawn
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Algebra.Com's Answer #189955 by drk(1908)![]() ![]() ![]() You can put this solution on YOUR website! Hi, here is the original question: \n" ); document.write( "f(x)= - 2x + 5 \n" ); document.write( "A. (1,3) \n" ); document.write( "B. (5, -5) \n" ); document.write( "C. (4, -3) \n" ); document.write( "D. (0,4) \n" ); document.write( "First, replace f(x) with y. To solve these, remember that the letter goes away and the number comes to stay. Instead of x, put in the number in the x part of the coordinate and do the same for y. Doing each one, we get \n" ); document.write( "A. (1,3) -> 3 = -2(1) + 5 -> 3 = 3 [true] \n" ); document.write( "B. (5, -5) -> 5 = -2(-5) + 5 -> 5 = 15 [false] \n" ); document.write( "C. (4, -3) -> -3 = -2(4) + 5 -> -3 = -3 [true] \n" ); document.write( "D. (0,4) -> 4 = -2*0 + 5 -> 4 = 5 [false] \n" ); document.write( "So, we see that B and D are false and that means (5,-5) and (0,4) DO NOT lie on the line. \n" ); document.write( " |