Concept explainers
In each of Exercises 7 –12, match the phrase with the most appropriate choice from the following list.
a.
b. 2
c.
d.
e.
f. 3
_________The slope of the graph of
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Elementary and Intermediate Algebra: Concepts and Applications (7th Edition)
- In Exercises 1–6, solve for x.arrow_forwardFor Exercises 33–38, find the exact value of each expression without the use of a calculator. (See Example 5)arrow_forwardFor Exercises 25–36, determine the slope of the line passing through the given points. (See Example 2) 25. (4, –7) and (2, – 1) 26. (-3, –8) and (4, 6) 27. (17, 9) and (42, –6) 28. (-9, 4) and (-1, –6) 29. (30, –52) and (-22, –39) 30. (- 100, -16) and (84, 30) 31. (2.6, 4.1) аnd (9.5, —3.7) 32. (8.5, 6.2) аnd (-5.1, 7.9) 33. 6) and 35. (3 V6, 2V5) and (V6, V5) 36. (2VIT, –3V3) and (VTI, -5V3) 34. -3, and 4, 10arrow_forward
- Match each graph with its x-intercepts. a. (1,0), (4, 0), ( –1,0) b. (0, 1), (0, 4), (0, – 1) c. (1, 0), (5, 0) d. (0, 1), (0, 5) e. (0, 6), (0, 4), (0, 6), (0, 2) f. (2, 0), (6, 0), (4, 0), (0, 0)arrow_forwardUse the blue line for the women shown on the scatter plot to develop a model for the percentage of never-married American females ages 25–29. a. Use the two points whose coordinates are shown by the voice balloons to find the point-slope form of the equation of the line that models the percentage of never-married American females ages 25–29, y, x years after 1980. b. Write the equation from part (a) in slope-intercept form. Use function notation. c. Use the linear function to predict the percentage of never-married American females, ages 25–29, in 2020.arrow_forwardAmerica is getting older. The graph shows the projected elderly U.S. population for ages 65–84 and for ages 85 and older.The formula E = 5.8√x + 56.4 models the projected number of elderly Americans ages 65–84, E, in millions, x years after 2020.a. Use the formula to find the projected increase in the number of Americans ages 65–84, in millions, from 2030 to 2060. Express this difference in simplified radicalform.b. Use a calculator and write your answer in part (a) to the nearest tenth. Does this rounded decimal overestimate or underestimate the difference in the projected data shown by the bar graph ? By how much?arrow_forward
- Use the red line for the men shown on the scatter plot to develop a model for the percentage of never-married American males ages 25–29. a. Use the two points whose coordinates are shown by the voice balloons to find the point-slope form of the equation of the line that models the percentage of never-married American males ages 25–29, y, x years after 1980. b. Write the equation from part (a) in slope-intercept form. Use function notation. c. Use the linear function to predict the percentage of never-married American males, ages 25–29, in 2015.arrow_forward9. What is the axis of symmetry for the graph? a. y = -4 b. x = - 6 12 C. y = 6 10- d. x = -4 4 -10 -8 -6 -4 -2 -2 6.arrow_forwardWhich would be the dependant variable, y?arrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage