Mark H. answered • 11/08/19
Tutoring in Math and Science at all levels
#1:
you will be applying offsets to the basic equation. If the graph is moved up 1 unit then y gets replaced by y -1. If it is moved down, then y gets replaced by y + 1
Why does it seem that the signs are wrong???--the way I think of it is that---when you put in a positive offset---the variable now needs to be smaller to get the same result.
Similar logic applies to the x axis.
For "stretch or shrink", study the shape of the function and any symmetry or NON-symmetry. In this case, there will be symmetry about the 45 degree line that goes through the origin. This is because y = 1/x is the same as x = 1/y
Mark H.
#2: The moment will be the same. The moment is the product of the force and the length of the lever arm--in this case, 9*80 = 720 ft-lbs11/10/19
Gracie S.
It’s an inverse model and a fulcrum works differently for number 2. For number one can you explain the transformations for me please11/14/19
Mark H.
Number 2: The moment (torque) is 720 ft-lbs. With the 15-foot lever arm, the required force is less----it will be 720/15 Number 1: Which part of my explanation did you not understand? You might want to sketch in the parent function, which is simply y = 1/x11/14/19
Hunny M.
no for number 2, it isn't a 15 foot lever arm system. its asking what amount of force you need in order to get the bolder a distance of 15 feet10/26/21
Hunny M.
if the amount of force to get to 9 feet is 80 then how much force do you need to get the bolder 15 feet10/26/21
Gracie S.
What about number 2?11/10/19