Question 317493
1.{{{y = -4x-7}}}
2.{{{y = 3x}}}
Substitute eq. 2 into eq. 1,
{{{3x=-4x-7}}}
{{{7x=-7}}}
{{{highlight(x=-1)}}}
Then from eq. 2,
{{{y=3(-1)}}}
{{{highlight(y=-3)}}}
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There is one solution, the equations are independent.