document.write( "Question 362309: Solve the following system of linear equations by graphing. If there is no solution, or if there is an infinite number of solutions, so state. Check your answer.\r
\n" ); document.write( "\n" ); document.write( "x + 2y = -4
\n" ); document.write( "x – y = -1
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Algebra.Com's Answer #258196 by HasanSahin(52) $\"\"$ $\"About$

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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 $\"-a%2Fb+=+-1%2F2\"$ .

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.

$\"graph%28+500%2C+500%2C+-4-8%2C+-4%2B8%2C+-2-8%2C+-2%2B8%2C+-0.5%2Ax%2B-2+%29+\"$ \n" ); document.write( "

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Solved by pluggable solver: DESCRIBE a linear EQUATION: slope, intercepts, etc

Equation $\"1+x+%2B+-1+y+=+-1\"$ describes a sloping line. For any
\n" ); document.write( " equation ax+by+c = 0, slope is $\"-a%2Fb+=+-1%2F-1\"$ .

X intercept is found by setting y to 0: ax+by=c becomes ax=c. that means that x = c/a. -1/1 = -1.
Y intercept is found by setting x to 0: the equation becomes by=c, and therefore y = c/b. Y intercept is -1/-1 = 1.
Slope is -1/-1 = 1.
Equation in slope-intercept form: y=1*x+1.

$\"graph%28+500%2C+500%2C+-1-8%2C+-1%2B8%2C+1-8%2C+1%2B8%2C+1%2Ax%2B1+%29+\"$ \n" ); document.write( "

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