document.write( "Question 290420: identify the slope and y intercept of y=x-4 \n" ); document.write( "
Algebra.Com's Answer #210157 by MathLover1(20849)\"\" \"About 
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Solved by pluggable solver: DESCRIBE a linear EQUATION: slope, intercepts, etc
Equation \"-1+x+%2B+1+y+=+-4\" describes a sloping line. For any
\n" ); document.write( " equation ax+by+c = 0, slope is \"-a%2Fb+=+--1%2F1\".
  • 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 -4/1 = -4.
  • Slope is --1/1 = 1.
  • Equation in slope-intercept form: y=1*x+-4.
\"graph%28+500%2C+500%2C+4-8%2C+4%2B8%2C+-4-8%2C+-4%2B8%2C+1%2Ax%2B-4+%29+\"\n" ); document.write( "
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