Chapter 1: Q9E (page 7)
Graph the function by hand, not by plotting points, but by starting with the graph of one of the standard functions given in Table 1.2.3, and then applying the appropriate transformations.
9. \(y = {\bf{1}} + {x^{\bf{2}}}\)
Chapter 1: Q9E (page 7)
Graph the function by hand, not by plotting points, but by starting with the graph of one of the standard functions given in Table 1.2.3, and then applying the appropriate transformations.
9. \(y = {\bf{1}} + {x^{\bf{2}}}\)
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Get started for freeA tank hold 1000 gallons of water, which drains from the bottom of the tank in half an hour. The values in the table show the volume V of water remaning in the tank (in gallons) after t minutes.
t(min) | 5 | 10 | 15 | 20 | 25 | 30 |
V(gal) | 694 | 444 | 250 | 111 | 28 | 0 |
(a) If P is the point (15, 250) on the graph of V, find the slopes of the secant lines PQ when Q is the point on the graph with \(t = {\bf{5}},\;{\bf{10}}{\rm{,}}\,{\bf{20}}{\rm{,}}\,{\bf{25}}{\rm{,}}\,{\bf{and}}\,\,{\bf{30}}\).
(b) Estimate the slope of the tangent line at P by averaging the slopes of two secant ines.
(c) Use a graph of V to estimate the slope of the tangent line at P. (This slope represents the rate at which the water is flowing from the tank after 15 minutes.)
Find a formula for the quadratic function whose graph isshown.
13. Recent studies indicate that the average surface temperature of the Earth has been rising steadily. Some scientists have modeled the temperature by the linear function \(T = 0.02t + 8.50\), where \(T\)is temperature in °C and \(t\)represents years since 1900.
(a) What do the slope and \(T\)-intercept represent?
(b) Use the equation to predict the Earth’s average surface temperature in 2100.
15-18 determine whether the curve is the graph of a function of \(x\). If it is, state the domain and range of the function.
16.
77-78 Graphs of f and g are shown. Decide whether each function is even, odd, or neither. Explain your reasoning.
78.
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