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Sagot :
1. turn it into standard form:
first equation:
y = x − 4
y - x = -4
second equation:
y = 3x + 4
y - 3x = 4
2. multiply the first equation by -3 and then add both equations in order to remove x.
-3y +3x = 12
+ y - 3x = 4
-2y = 16
y = -8
3. With y, plug it in the first equation.
-8 = x -4
x = -4
Your intercept is (-4, -8)
The answer is (−4, −8), because the point satisfies both equations
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