document.write( "Question 206137: 6x+9y-15 \n" ); document.write( "
Algebra.Com's Answer #155707 by Targetweek(62)\"\" \"About 
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First set equal to zero
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Solved by pluggable solver: DESCRIBE a linear EQUATION: slope, intercepts, etc
Equation \"6+x+%2B+9+y+=+15\" describes a sloping line. For any
\n" ); document.write( " equation ax+by+c = 0, slope is \"-a%2Fb+=+-6%2F9\".
  • X intercept is found by setting y to 0: ax+by=c becomes ax=c. that means that x = c/a. 15/6 = 2.5.
  • Y intercept is found by setting x to 0: the equation becomes by=c, and therefore y = c/b. Y intercept is 15/9 = 1.66666666666667.
  • Slope is -6/9 = -0.666666666666667.
  • Equation in slope-intercept form: y=-0.666666666666667*x+1.66666666666667.
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