I need help please is for tomorrow):

Step-by-step explanation:

If a number gets increased by scale factor = k

Then k > 1

If the number gets decreased by a scale factor 'k'

Then 0 < k < 1

Let numbers gets increased by the scale factor = 2,

And decreased by the scale factor =

Numbers             Scale up by 2           Scale down by

   0.05                  0.05 × 2 = 0.1             0.05 × = 0.025

    7                       7 × 2 = 14                     7 × = 3.5

   13                      13 × 2 = 26                  

   25                     25 × 2 = 50                                

  102                   102 × 2 = 204              

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

center= (-2,0)

radius= sqrt2/2

step-by-step explanation: