Help for the slope of this I get 2 and 1/3 but i need to get a negative reciprocal

(4,5),(8,13)(-4,9)
I need to show triangle ABC is a right triangle

2 answers

2 1/3 = 7/3
so, the negative reciprocal is -3/7
surely you have outgrown using mixed numbers ...
Ah! I'll help.
When finding a reciprocal, you first need convert the mixed number into a improper fraction. (Improper fractions are fractions that have more parts than the whole, such as; 100/55 or 400/100)
To convert 2 1/3, we need to multiply the whole numbers by the denominator, and then add the numerator.
2*3 is 6, and 6+1 is 7. This leaves the improper fraction 7/3.
All a reciprocal is, is the numerator and denominator switched.
Therefore, 7/3's reciprocal is 3/7, and as a negative number, it is -3/7.
The Negative Reciprocal is -3/7! I hope this helps! Have an awesome day, and I wish you luck.
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