Question 504038
(a) Define a line that has the same y-intercept as 2y = 6x +8
2y = 6x +8
y = 3x + 4
The y-intercept = (0,4), so there are infinitely many lines that go through that point.
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(b) Define a line parallel to 4x +4y  = 20
4x + 4y = 20
4y = -4x + 20
y = -1x + 5
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So, the desired line has a slope of -1 and goes through the point (0,4).
y = -1x + 4
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{{{graph(500,500,-10,10,-10,10,3*x+4,-x+5,-x+4)}}}