A company that manufactures cars for freight trains manufactured 393 cars in the month of August, out of which 168 were boxcars
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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