Xwhat is the domain of the function graphed above? oa. -2 5 iso b. -20 < x d. -10

The domain is  -∞ < x < ∞ ⇒ answer B

Step-by-step explanation:

* lets revise the meaning of the domain

- The domain is the values of x

- The domain is all the values of x which make the function is defined

- If there are some values of x make the function undefined, we

 exclude these values from the domain

* Now lets look to the figure

- It is a straight line because its ends are arrow, that means the line

 is a straight line no starting point or ending point

- That means x can be any real number

- There is no value of x make the function undefined

∴ The domain of this function is all real numbers

∴ The domain is (-∞ , ∞)

OR

∴ The domain is {x I x all real numbers}

OR

∴ The domain is  -∞ < x < ∞

x=30

step-by-step explanation:

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.