Ineed to know what question 3 and 4 is

3. (-∞, ∞), [0, ∞); The graph is a function

4. -5

Step-by-step explanation:

Question 3

A. Domain

The domain is the set of all possible x-values that will make the function work.

x can take any value from -∞ to ∞

The domain is (-∞, ∞).

B. Range

The range is the spread of the y-values.

We see from the graph that y can have any positive value.

The range is [0, ∞).

C. Test for function

We can use the vertical line test to determine if the graph is that of a function. A function can only have one value of y for each value of x.

We see that a vertical line from any point on the x-axis will intersect only one point on the graph.

The graph is a function.

Question 4

ƒ(x) = -2x+ 1

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step-by-step explanation:

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: