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A is 400
E I don't know soory
Answer:
the difference is the slope
Step-by-step explanation:
y = mx+b
m is the slope
b is the y-intercept
2x+4
3x+4
4x+4
the m constant changes meaning the slope is the difference
It depends on the systems of equations. I would stay away from elimination, go for substitution and graph only if asked.