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The line parallel to 3x plus y equals 0 that has the same x intercept as y equals 3x-9 determine the equation of the line from the clue answer in Ax plus By plus C equals 0 please help me answer this?
Wiki User
∙ 11y ago
same x intercept as y = 3x -9
x intercept is when y = 0
0 = 3x-9
3x = 9
x = 3, the same x intercept
Now find the line parallel to 3x+y = 0 with x intercept = +3
Since line is parallel it has the same slope
3x+y = 0
y = -3x +0 standard form where the number in front of x is slope, = -3
Thus y = -3x + b
but we know x intercept (when y = 0) is +3
0 = -3(3) + b
solve b = +9
the parallel line is
y = -3x+9
Wiki User
∙ 11y ago
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