![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
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The equation is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=134b0c7c7621de349a9e09f2c4af924e.png\")
.
The equation is \ \
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.
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Solve the above equation for ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b1f02a70f7489dd3b8742e9e1c94d6d0.png\")
.
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![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=134b0c7c7621de349a9e09f2c4af924e.png\")
Subtract ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=80fcc9ece56199c26cb94733c6f38f05.png\")
from each side.
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3a9c4773c3bf8e1d8225629938030358.png\")
Divide each side by ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d9285d5a293c4e12028128b0fb74ba46.png\")
.
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ae6328638f32fe8aae0b2b6e4b078c86.png\")
.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
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An input x = 1.
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Substitute x = 1 in ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ae6328638f32fe8aae0b2b6e4b078c86.png\")
.
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d62d1c85ff7e6d4f962fcc11cf0d272b.png\")
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6b240f14de7444a662ad50da48399304.png\")
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f3a1bb805dc87c9d2b9f12f6b21b30ae.png\")
.
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An input x = 2.
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Substitute x = 2 in .
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ba29dc99d4c7c52efc04283437f5d46b.png\")
\
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=eb6fd80e12da75233b3c30f49a31be9d.png\")
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9a333857563fa2389edfc90cf02ad713.png\")
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=487595702076f4744de76861960a6f2a.png\")
.
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For any input of x, we get only one output for y.
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Thus, the equation 3y +4x =11 defines y as a function of x.
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
Thus, the equation 3y +4x =11 defines y as a function of x.
\