F(4)=4(4)+5
Which equals
F(4)=21
The answer to question 5 is -3.
The answer to question 9 is -5.<span>
</span>The answer to question 7 is 28x^3y^4.
By <span>Pythagorean triple
a²+b²=c²,
c should be longest side
10²+14²=26²
100+196=676
296</span>≠676
so sides do not form Pythagorean triple, it is not a right triangle
Answer: No
Explanation: The relation is not a function because there is more than one output (y) for a single input (x).