I prefer to use a midpoint formula that deals with both coordinates at once. For points A and B, their midpoint (M) is
... M = (A + B)/2
We can solve this for B by multiplying by 2 and subtracing A.
... 2M = A + B
... 2M - A = B
For your midpoint M(0, -10) and your endpoint A(-4, -5), the other endpoint will be
... B = 2(0, -10) - (-4, -5) = (2·0 -(-4), 2·(-10) -(-5))
... = (4, -15)
Pyramids or prisms can have 7 or more vertices.
Answer:
y=7x+1
Step-by-step explanation:
y-y1=m(x-x1)
y-8=7(x-1)
y-8=7x-7
y=7x-7+8
y=7x+1