STEP 1: Follow the directions below to create your data set. Navigate to Zillow.com, realtor.com, or another comparable real estate website where you can find houses for sale in your area of the country. Search for houses in your area within the price range of $100,000 to $900,000. o If you live in an area with several zip codes, search one zip code. Record the square footage and the price for four different houses in the chart below. o Note: Pick a variety of prices within the price range given above for best results. A. Use the four houses you selected above to complete the chart. House Square Footage (x - variable) Price (y - variable) (Sq. Footage, Price) (x, y) House 1 2500 500,000 2500,500000 House 2 1275 319,000 1275,319000 House 3 1700 389,000 170,389000 House 4 3000 670,000 3000,670000 B. Based on the ordered pairs you selected, is the relation a function? Why, or why not? STEP 2: Identify the two outermost points. List the corresponding ordered pairs below: o Point One - What ordered pair has the smallest x-value (smallest square footage)? (x1, y1) = ( , ) o Point Two - What ordered pair has the largest x-value (largest square footage)? (x2, y2) = ( , ) C. Calculate the slope between the two outermost points. Round your answer to four decimal places. Show each step of your work. Use the template below to assist you. Replace the "?" with the appropriate numbers. Here, the slope also represents the average cost per square foot using the two houses you selected. Your average cost per additional square foot is _______________. D. Complete parts D1 and D2 to write the linear equation in slope-intercept form. D1. Substitute the values for x1, y1, and m in the formula below. Use the decimal value found in part C for the slope (m), and only one point (ordered pair) identified in step 2 in the point-slope formula listed below. D2. Starting with the point-slope formula, find the slope-intercept form equation, y=mx+b. Show each step of your work. Round your value for m and b to four decimal places. What is the linear equation in slope-intercept form? ______________ E. Indicate whether the line in Part D rises, falls, is horizontal, or is vertical. a. The line rises from left to right. b. The line falls from left to right. c. The line is horizontal. d. The line is vertical. The correct answer is choice _____. F. Based on your answer for Part E, describe the relationship between square footage of a house (x) and price (y). In other words, when the square footage increases, what happens to the price?

STEP 1: Follow the directions below to create your data set. Navigate to Zillow.com, realtor.com, or another comparable real estate website where you can find houses for sale in your area of the country. Search for houses in your area within the price range of $100,000 to $900,000. o If you live in an area with several zip codes, search one zip code Record the square footage and the price for four different houses in the chart below. Note: Pick a variety of prices within the price range given above for best results. A. Use the four houses you selected above to complete the chart. House Square Footage Price (Sq. Footage, Price) (x - variable (y - variable) (x, y) House 1 2500 500,000 2500,500000 House 2 1275 319,000 1275,319000 House 3 1700 389,000 170,389000 House 4 3000 670,000 3000,670000 B. Based on the ordered pairs you selected, is the relation a function? Why, or why not? STEP 2: Identify the two outermost points. List the corresponding ordered pairs below: Point One - What ordered pair has the smallest x-value (smallest square footage)? (x1, y1) = [ ) Point Two - What ordered pair has the largest x-value (largest square footage)? (x2, yz) = () C. Calculate the slope between the two outermost points. Round your answer to four decimal places. Show each step of your work. Use the template below to assist you. Replace the "?" with the appropriate numbers. V2 - V1 m : X2 - X1 ? - ? m = 7