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finda. the domainb. rangec. f(-3)d. the values of x for which f(x) =-2e. the point where the graph of f crosses the x-axisf. the point where the graph of f crosses the y-axisg. value of x for which f(x) < 0h. is f(-8) positive or negative?

finda. the domainb. rangec. f(-3)d. the values of x for which f(x) =-2e. the point-example-1
User Birnbaum
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1 Answer

18 votes
18 votes

(a)The domain is the set of values of x in the function.

From the graph, the domain of f(x) is: (-∞, ∞)

(b)The range is the set of values of y in the function.

From the graph, the range of f(x) is: (0, ∞)

(c)From the graph, When x=-3, y=0

Therefore: f(-3)=0

(d)There is no value of x that gives f(x)=-2.

The values of x for which f(x) =-2 is Undefined.

(e)The point where the graph of f crosses the x-axis is (0, 0).

(f)The point where the graph of f crosses the y-axis is (0, 0).

(g)The value of f(x) is not negative. Therefore, the value of x for which f(x) < 0 is Undefined.

(h)When x=-8, f(x)=0

Therefore, f(-8) is zero. It is neither positive nor negative.

User TMK
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