Since you have y alone on one side of the equation......
Use substitution and plug in 1/2x-4 for y in the other equation.

Distribute

Combine like terms

Add 8 to both sides

Divide by 4
and 
Plug this value in for x

Simplify

Multiply everything by 8 and simplify

Divide.....

Your answers are:

Answer:
Vertex plot is (1,4)
and
second plot point (0,6)
Step-by-step explanation:
You can use the the desmos graph calculator by entering quadratic function f(x) = 2x^2 − 4x + 6
Answer
v = 1000 cubic cm
Step-by-step explanation:
The formula for Volume of Cube is V = 
in this case the sides are 10 cm so we plug in the numbers
v = 
v = 1000 cubic cm
Hello from MrBillDoesMath!
Answer: The domain is the set of real numbers.
the full real number system
Discussion:
f(x) = (4/5)^x is defined for all x as the underlying function (4/5)^x is defined for all x. Therefore the domain is the set of real numbers.
Thank you,
MrB