You put your little sister (mass m) on a swing whose chains have length l and pull slowly back until the swing makes an angle ϕ with the vertical. part a find the work that you do.

2/3

step-by-step explanation:

the slope of a line is equal to the rise/run. in this case the line rises 2 units for every +3 units it moves

answer:

c) the x-coordinate of the center of the circle increases by 3

y= 2x+7

changed to y= 5x +7

as slope is increased from 2 to 5

therefore it would be less steeper

so, option d) is correct