Solve the system of equations 2x-y=1; x+2y=8 graphically and find the coordinates of the points where corresponding lines intersect y-axis.
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$2a+\dfrac {1} {2a}$
7th-9th grade
Algebra
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Qanda teacher - Sudhanshu
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Tovah solves the equation $\square 1aTex$ $ltac\left(1\right)\left(x+3\right)+lirac\left(2\right)\left(x\right)=ltrac\left(3\right)\left(x+3\right)$ $an0$ obtains $-1aTe\times $ $x\right):=-3:\right):x\left(:=1:0$ Determine if $21a$ $aTex:$ $x\right):=:-3$ $:or\left(:x\right):=0$ extraneous. Justify your answer. $On|yx=-3$ is extraneous and $x=0isa$ real solution. $○$ $Onbyx=0$ is extraneous and $x=-3is$ real solution. $○$ Both solutions are extraneous because when $x=-3$ and $x=0$ are substituted into the original equation, it makes a denominator equal to zero and you canhot divide by 0 (undefined). $○$ O Both $x=-3andx=0$ are real solutions. There are no extraneous roots.
10th-13th grade
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