document.write( "Question 234367: i have two tables i have to write functions rules for i know what the difference is between them but i dont know who to write it or explain it my book doesnt show me the first table is x- 1,2,3,4 y- 25,30,35,40
\n" ); document.write( " the second table is x-1,2,3,4 y $10.00, $12.50,$15.00,$17.50 im sure i can do it i just dont know how to write it please help me
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Algebra.Com's Answer #172870 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
for the 1st one, y changes by 5 when x changes by 1 ___ so y = 5x + ?
\n" ); document.write( "___ think of the ? as the \"adjustment\"
\n" ); document.write( "___ when x is 2, y is 30 ___ 30 = 5(2) + ? ___ 30 = 10 + ? ___ so ? is 20
\n" ); document.write( "___ the function is y = 5x + 20\r
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\n" ); document.write( "\n" ); document.write( "the 2nd one works the same as the 1st one
\n" ); document.write( "___ y changes by $2.50 when x changes by 1 ___ y = $2.50 x + ?
\n" ); document.write( "___ when x is 1, y is $10.00 ___ $10.00 = $2.50(1) + ? ___ $7.50 = ?
\n" ); document.write( "___ y = $2.50 x + $7.50
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