) [7 − 2x + 5y − (x − y)] − (5x + 3y − 7)
2 answers:
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Answer:
Step-by-step explanation:
The equation for a line is y=mx + b where m represents the slope
If a line is perpendicular to another line, it's slope is the negative reciprocal of the other line's slope.
The reciprocal of -4 is
And the negative of that would be