Exam 1: Linear Equations and Graphs

Use the REGRESSION feature on a graphing calculator. -In the table below,x represents the number of years since 2000 and y represents sales (in thousands of dollars)of a clothing company.Use the regression equation to estimate sales in the year 2006.Round to the nearest thousand dollars.

Solve the inequality and graph. Express your answer in interval notation. -7x - 3 > 6x - 6

Use the REGRESSION feature on a graphing calculator. -The paired data below consists of the temperature on randomly chosen days and the amount of a certain kind of plant grew (in millimeters). Find the linear function that predicts a plant's growth as a function of the temperature.Round your answer to two decimal places.

Use the REGRESSION feature on a graphing calculator. -The use of bottled water in the United States has shown a steady increase in recent years.The table shows the annual per capita consumption for the years 1995 - 2001. With x being the years since 1995,find the linear function that represents this data.Round your answer to two decimal places.

Solve the inequality and graph. Express your answer in interval notation. --23 c -4x - 3 c -19

Provide an appropriate response. -Use the graph to find the slope-intercept form of the equation of the line.

Find the slope and y intercept of the graph of the equation. -y = -4x + 6

Solve the problem. -Find the Celsius temperature (to the nearest degree)when Fahrenheit temperature is 95° by solving the equation 95 = C + 32,where F is the Fahrenheit temperature (in degrees)and C is the Celsius temperature.

Graph the equation. -72 + 8y = 0

Find the slope and y intercept of the graph of the equation. -y = 3x - 6