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6X - 2Y = 18
- 2Y = - 6X + 18
Y = 3X - 9
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zero out Y to find X intercept
3X - 9 = 0
3X = 9
X = 3
==========X intercept
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x - 9y = 18At the x-intercept, y=0 :x = 18At the y-intercept, x=0 :-9y = 18-y = 2y = -2
2x = 3y - 18At the x-intercept, y = 0 :2x = -18x = -9At the y-intercept, x = 0 :3y - 18 = 03y = 18y = 6
3x - 5y = 45At the y-intercept, x = 0.-5y = 45y = -9At the x-intercept, y = 0.3x = 45x = 15
Set x=0, solve for y, which is the y intercept: 0 - 3y = 9 --> y = -3. Set y=0 and solve for x = 9 for x-intercept.
The point (0, -5) is the y-intercept (x = 0)