Bundle: Macroeconomics, 13th + Aplia, 1 Term Printed Access Card
13th Edition
ISBN: 9781337742375
Author: Roger A. Arnold
Publisher: Cengage Learning
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Chapter A, Problem 4QP
To determine
The slope.
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What is the slope of the line to the equation P=30−1/2Q?
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Chapter A Solutions
Bundle: Macroeconomics, 13th + Aplia, 1 Term Printed Access Card
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- Which one of the following is not true about slope? A, It is vertical change over horizontal change B, The slope of a line represents the change in one variable that occurs when the other variable changes C, The slope of straight line between any two point on the line is negative D Slope= y2-y1/x2-x1arrow_forward“The hotter it gets, the more water people drink.” This statement implies that the relationship between temperature and water consumption must have a ____________. positive slope.slope always equal to one.slope always equal to 45 degrees.negative slope.arrow_forward1. Solve the following problem by using Excel for graph sketching. A soda vendor at Louisiana State University football games observes that more sodas are sold the warmer the temperature at game time is. Based on 32 home games covering five years, the vendor estimates the relationship between soda sales and temperature to be y = -240 + 8x, where y = the number of sodas she sells and .x = temperature in degrees Fahrenheit, (a) Interpret the estimated slope and intercept. Do the estimates make sense? Why, or why not? (b) On a day when the temperature at game time is forecast to be 80°F, predict how many sodas the vendor will sell. (c) Below what temperature are the predicted sales zero? (d) Sketch a graph of the estimated regression line.arrow_forward
- Suppose the relationship between the government's tax revenue (T) and national income (Y) is represented by the equation T = 30 +0.5Y. Plot this relationship on a scale diagram, with Y on the horizontal axis and T on the vertical axis. Interpret the equation. Use the line drawing tool to draw the equation. Make sure to plot the vertical axis as one endpoint of the line. Properly label this line. Carefully follow the instructions above, and only draw the required objects.arrow_forwardYou are given the function y=11−1.5x. The slope of the equation is enter your response here. (Round your answer to one decimal place.)arrow_forwardA zero slope shows: positive relationship between two variables no relationship between two variables does not show anything negative relationship between two variablesarrow_forward
- Suppose the relationship between the government's tax revenue (T) and national income (Y) is represented by the equation T=10+0.25Y. Plot this relationship on a scale diagram, with Y on the horizontal axis and T on the vertical axis. Interpret the equation.arrow_forwardHow you would mitigate the effect of autocorrelation in the analysis.arrow_forwardThe table gives information about the relationship between two variables, x and y. The relationship between x and y is ______ and the slope of the relationship ______ as x increases. x 2 4 6 8 10 y 196 192 188 184 180arrow_forward
- Straight line AB in Exhibit A-7 shows that a. increasing values for X reduces the value of Y. b. decreasing values for X increases the value of Y. c. there is an inverse relationship between X and Y. d. all of the above are true.arrow_forwardQuestion 10 A moderating variable influences the original relationship between one or more independent variables and a dependent variable. True Falsearrow_forwardA firm keeps a record of sales and prices over the past seven months, resulting in the following table: Price (ZMW/ton) Sales (tons) Nov. 1985 7.5 84.5 Dec. 8.0 82.0 Jan. 1986 8.0 84.0 Feb. 7.2 92.0 March 7.0 95.0 April 8.0 92.0 May 8.5 91.5 Use these observations to estimate demand as a linear function of both price and time. Further, utilise this function to estimate demand for the following month, on the assumption that: (a) price remains unchanged, (b) price increases to ZMW9/ton. Hence estimate the price elasticity of demand between these prices and find the price which would maximise sales revenue. Given the nature of the observations, comment on any difficulties in interpreting your results for decision-making purposes.arrow_forward
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