Domain and Range (a)
f(−1) =

(b)
f(0) =

(c)
f(1) =

(d)
f(2) =

9514 1404 393

Step-by-step explanation:

The domain is the horizontal extent of the graph. This graph extends to the left to the point with x=-1. The line going off the bottom is expected to continue to infinity (to the right, as well as down). So, the domain is ...

  4 ≤ x < ∞

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The range is the vertical extent of the graph. We've already noted that it extends down to -∞. The peak of the graph is at y = 7. So, the range is ...

  -∞ < y ≤ 7

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To determine the values of f(x), locate the x-value on the x-axis. Follow the vertical line until it meets the curve. Then follow the horizontal line to the y-axis to find the y-value at that point. That is the value of f(x). We read the following from the graph:

s

step-by-step explanation: