The equation of a line is y=mx+b
To find the gradient you calculate the change in Y/change in X.
To find the y-intercept you should plug it in a graphic calculator.
Answer:

Step-by-step explanation:






The answer is 43 because 3*3*3=27 and 4*4=16
Answer:
ZERO
Step-by-step explanation:
All steps in the picture , I hope this is a clearly.
Answer:
A square
Step-by-step explanation:
A parallel cross section will be the same shape of the base. Since it's a square base, all parallel cross sections will also be parallel. Think of it as a different floor of a pyramid shaped building.