If a hiker walks 6.4 miles east, and then turns and walks 5.9 miles south, how far away is he from his starting point

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Will mark name all segments skew to bc

The approximate line of best fit for the given data points, y = −2x − 2, is shown on the graph.which is the residual value when x = –2? a)–2 b)–1 c)1 d)2