2. a triangular pyramid begins with these coordinates: p(–1, 2, 0) y(2, 3, 0) r(–3, 4, 0) a(–2, 1, 5) the pyramid is then reflected over the yz-plane. the reflected image is then translated using the following rule: (x, y, z)  (x + 2, y + 4, z – 3). determine the coordinates of that final image, following these steps: 'write the general rule you use for the reflection.' 'what would be the new points of the shape after this reflection? ' 'now, use the points from number 2 and apply the translation rule. show the results of your calculations for that translation.'

Ted and meg have each drawn a line on the scatter plot shown below: the graph shows numbers from 0 to 10 on x and y axes at increments of 1. dots are made at the ordered pairs 1, 8 and 2, 7.5 and 3, 6 and 4, 5.5 and 4.5, 4.8 and 5, 4 and 6, 3.5 and 7, 3 and 8, 1.9 and 9, 1.2 and 10, 0. a straight line labeled line p joins the ordered pairs 0, 8.5 and 10.1, 0. a straight line labeled line r joins the ordered pairs 0, 8.5 and 7.8, 0. which line best represents the line of best fit? line p, because it is closest to most data points line p, because it shows a positive association line r, because it is closest to most data points line r, because it shows a negative association