Question 1059869
-4x + 4 = 4y
y = 2x


-4x + 4 = 4(2x)   {substituted 2x, in for y, into top equation}
-4x + 4 = 8x   {multiplied 4 by 2x}
12x = 4   {added 4x to each side}
x = 1/3   {divided each side by 12}


y = 2x   {bottom original equation}
y = 2(1/3)   {substituted 1/3, in for x, into bottom original equation}
y = 2/3   {multiplied}


x = 1/3 and y = 2/3   {the point of intersection of the two lines}
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*[illustration point_of_intersection].