We know that functions are mathematical entities that assign unique outputs to given inputs. In other words, a function can't have repeated values in the input repeated x-value.
For example consider the relation {(1,4), (1,5), (2,6), (3,7), (4,8), (5,9)}.
We see that above relation has repeated x-value "1" which is assigned to two different output values 4 and 5. So by definition of function, above relation can't be a function.
9 - a (c + 5)
9 - 3 * 4
9 - 12
solution is -3
Answer: 1. a) discriminant
4. b) No. when < 0 it has no Real solutions
<u>Step-by-step explanation:</u>
All of the other answers are correct.
In the quadratic expression, the solutions are defined by the discriminant (b² - 4ac) as follows:
- Discriminant < 0: 2 complex solutions (no Real solutions)
- Discriminant = 0: 1 Real Solution
- Discriminant > 0: 2 Real solutions
Answer:
107
Step-by-step explanation:
EFD + 135 = 180
EFD = 45
DEF + 28 + 45 = 180
DEF + 73 = 180
DEF = 107
