Answer:
As the given equation represents a quadratic function.
Thus,
represents a function.
As we know that the function is just a relation in which each input has only one output.
Thus,
represents a relation and function.
Step-by-step explanation:
Given the equation

As the given equation represents a quadratic function.
Thus,
represents a function.
As we know that the function is just a relation in which each input has only one output.
Thus,
represents a relation and function.
We know that the domain of a function is the set of input or argument values for which the function is real and defined.

We also know that the range of a function is the set of values of the dependent variable for which a function is defined.

The graph is also attached below. From the graph, it is clear that it represents a Parabola.
See, pls, offered explanation:
1) the both equations are linear function, it means system made up of the both equation has the only solution.
2) if to prove this:

Answer: one solution.
Answer:
it is x=7
x=-1
Step-by-step explanation:
i using the quadratic formula