Tracy is finding the equation of a median-median line. She found that the equation of the line through the first and third summa
ry points is y = 0.4x + 38. Then she found that the equation of the line that is parallel to this line and passes through the second summary point is y = 0.4x + 59. What is the equation of the median-median line?. . a. y = 0.4x + 41. . b. y = 0.4x + 45. . c. y = 0.4x + 52. . d. y = 0.4x + 56.
<span>1) Find the equation of the
line that passes through (x1, y1) and (x3, y3). We have it: </span>y = 0.4x + 38<span>2) Find the equation of the
line parallel to the previous line that passes through (x2, y2). </span><span>That is: y = 0.4x + 59 </span><span>3) Find the weighted
average of the
y-intercepts. b=(b1+b2+b1)/3 = (38+59+38)/3 b= 45 The median-median line is the line parallel to the previous two lines with the weighted y-intercept.Hence, Y = 0.4 x + 45 is the answer</span>
