You can simplifying 24/3 by dividing 24 by 3.
24÷3=8
The answer is 8.
This would be any equation whose slope isn’t -1 or 1.
If the slope was -1, the lines would be parallel because the have the same slope.
If the slope was 1, the lines would be perpendicular because 1 is the negative reciprocal of -1.
Any line with any other slope will intersect with y=-x.
Hope this helps!
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The answer is probably the opposite which in this case would be -19 ?