Concept explainers
Finding Points on a Line In Exercises 15–18, use the point on the line and the slope of the line to find three additional points that the line passes through. (There is more than one correct answer.)
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Calculus
- Part 3 of 5 (c) Use the data points (4, 1.4) and (28, 2.6) to find an equation of the line through these points. Express numbers as decimals or integers. Write the answer in slope-intercept form (y=mx+b). The equation is 0=0 Ś Xarrow_forward曲 Plot the following six points: (- 2, 2) (1, 5) (- 5, - 1) (1,0) (4, - 4) (0, – 3) 4 2. 2. -1 -1 -4 -3 -2 -3 -4 3. inarrow_forwardPractice & Problem-Solving 9.1.17 Find the midpoint of the line segment joining points A and B. A(6, - 7); B(4,3) The midpoint of the line segment is (Type an ordered pair.) Enter your answer in the answer box and then click Check Answer. All parts showing Review prarrow_forward
- Does the line through the points (1, 0, –4) and (1, –2, 1) intersect the x-axis? Explain your reasoning.arrow_forwardManatee population. In January 2005, 3143 manateeswere counted in an aerial survey of Florida. In January2011, 4834 manatees were counted. (Source: Florida Fishand Wildlife Conservation Commission.)a) Using the year as the x-coordinate and thenumber of manatees as the y-coordinate, find anequation of the line that contains the two datapoints.b) Use the equation in part (a) to estimate the number ofmanatees counted in January 2010.c) The actual number counted in January 2010 was5067. Does the equation found in part (a) give anaccurate representation of the number of manateescounted each year? Why or why not?arrow_forwardHi! I need help finding the answers in the yellow boxes please :) Thank you so so much!!arrow_forward
- Road Grade. The grade of a road is defined as the distance it rises (or falls) to the distance it runs horizontally, usually expressed as a percentage. Consider a road with positive grade, g. Suppose that you begin driving on that road at an altitude a0. a. Find the linear equation that expresses the altitude, a, when you have driven a distance, d, along the road. (Hint: Draw a graph and apply the Pythagorean Theorem.) b. Identify and interpret the y-intercept and slope of the linear equation in part (a). c. Apply your results in parts (a) and (b) to a road with a 5% grade and an initial altitude of 1 mile. Express your answer for the slope to four decimal places. d. For the road in part (c), what altitude will you reach after driving 10 miles along the road? e. For the road in part (c), how far along the road must you drive to reach an altitude of 3 miles?arrow_forwardLinear algebra p16arrow_forwardWhat’s the answer?arrow_forward
- Sales Barnes & Noble had annual sales of $6.8 billion in 2013 and $6.1 billion in 2015. Use the Midpoint Formula to estimate the sales in 2014. Assume that the annual sales followed a linear pattern.arrow_forwardThe linear model P= 3.75g+1.5 predicts the total cost, P, in dollars, to purchaseg gallons of gas at a gas station. Based on the linear model, how much should it cost to purchase 12 gallons of gas? O $17.25 O $21.75 O $45.00 O $46.50 O Calculatorarrow_forwardGraph a line that passes through (0,0) and (2.3).arrow_forward
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