document.write( "Question 632555: Help me please to understand how to slove this problem. x-2y=-4 \n" ); document.write( "
Algebra.Com's Answer #398351 by reviewermath(1029)\"\" \"About 
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Solved by pluggable solver: DESCRIBE a linear EQUATION: slope, intercepts, etc
Equation \"1+x+%2B+-2+y+=+-4\" describes a sloping line. For any
\n" ); document.write( " equation ax+by+c = 0, slope is \"-a%2Fb+=+-1%2F-2\".
  • X intercept is found by setting y to 0: ax+by=c becomes ax=c. that means that x = c/a. -4/1 = -4.
  • Y intercept is found by setting x to 0: the equation becomes by=c, and therefore y = c/b. Y intercept is -4/-2 = 2.
  • Slope is -1/-2 = 0.5.
  • Equation in slope-intercept form: y=0.5*x+2.
\"graph%28+500%2C+500%2C+-4-8%2C+-4%2B8%2C+2-8%2C+2%2B8%2C+0.5%2Ax%2B2+%29+\"\n" ); document.write( "
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