document.write( "Question 758563: How do i find the y intercept of the line 9x+3y+15=0 \n" ); document.write( "
Algebra.Com's Answer #461563 by reviewermath(1029)\"\" \"About 
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Solved by pluggable solver: DESCRIBE a linear EQUATION: slope, intercepts, etc
Equation \"9+x+%2B+3+y+=+-15\" describes a sloping line. For any
\n" ); document.write( " equation ax+by+c = 0, slope is \"-a%2Fb+=+-9%2F3\".
  • X intercept is found by setting y to 0: ax+by=c becomes ax=c. that means that x = c/a. -15/9 = -1.66666666666667.
  • Y intercept is found by setting x to 0: the equation becomes by=c, and therefore y = c/b. Y intercept is -15/3 = -5.
  • Slope is -9/3 = -3.
  • Equation in slope-intercept form: y=-3*x+-5.
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