Intermediate Algebra (11th edition)

OBJECTIVE 7 Use the midpoint formula.If the coordinates of the endpoints of a line segment are known, then the coordinates of th ...

SECTION 3.1 The Rectangular Coordinate System 143 When graphing with a graphing calculator, we must tell the calculator how to s ...

2.The graph shows the percentage of Americans who moved in selected years. (a)If the ordered pair represents a point on the grap ...

27. 28. 29. 30. 31. 32. 33.Concept Check Consider the patterns formed in the tables for Exercises 23 and 31.Fill in each blank w ...

EXERCISES 73 – 75 73.The screens show the graph of one of the equations in A – D. Which equation is it? A. B. C. - 3 x- 2 y= 6 D ...

STUDY SKILLS Analyzing Your Test Results Find each quotient. See Section 1.2. Solve each equation for y. See Sec ...

Slope is the ratio of vertical change, or rise,to horizontal change, or run.A sim- ple way to remember this is to think, “Slope ...

Finding the Slope of a Line Find the slope of the line through the points and We let and in the slope formula. Thus, the slope i ...

Finding Slopes of Horizontal and Vertical Lines Find the slope of each line. (a) The graph of is a horizontal line. See FIGURE 1 ...

Finding the Slope from an Equation Find the slope of the graph of Solve the equation for y. Subtract 3x. Divide eachterm by. The ...

In Example 5(a),the slope of the line is the positivenumber The graph of the line in FIGURE 18slants up (rises) from left to rig ...

Determining Whether Two Lines Are Perpendicular Are the lines with equations and perpendicular? Find the slope of each line by s ...

OBJECTIVE 5 Solve problems involving average rate of change.The slope formula applied to any two points on a line gives the aver ...

SECTION 3.2 The Slope of a Line 155 Interpreting Slope as Average Rate of Change During the year 2000, the average person in the ...

156 CHAPTER 3 Graphs, Linear Equations, and Functions 5.Concept Check Match each situation in (a) – (d) with the most appropriat ...

23.Concept Check On the basis of the figure shown here, determine which line satisfies the given description. (a)The line has po ...

Graph each line described. See Example 5. 57.Through ; 58.Through ; 59.y-intercept ; 60.y-intercept ; 61.Through ; 62.Through ; ...

86.The upper deck at U.S. Cellular Field in Chicago has produced, among other complaints, displeas- ure with its steepness. It i ...

90.The graph provides a good approx- imation of the number of mobile homes (in thousands) placed in use in the United States fro ...

Solve each equation for y. See Section 2.2. Write each equation in the form See Section 2.1. 105.y- 1 - 12 =- 1 2 ...