The graph shows the distance a car traveled, y, in x hours:
a coordinate plane graph is shown. the x-axis is labeled time in hours ,and the y-axis is labeled distance in miles. the line passes through the points 2 comma 60, and 4 comma 120.
what is the rise-over-run value for the relationship represented in the graph?
20
30
1 over 20
1 over 30

Find a parametrization for the curve「and determine the work done on a particle moving along γ in r3 through the force field f: r^3--r^3'where f(x,y,z) = (1,-x,z) and (a) im (γ) is the line segment from (0,0,0) to (1,2,1) (b) im (γ) is the polygonal curve with successive vertices (1,0,0), (0,1,1), and (2,2,2) (c) im (γ) is the unit circle in the plane z = 1 with center (0,0,1) beginning and ending at (1,0,1), and starting towards (0,1,1)