The center is (0,0)
You are looking for a scale factor of 4..
Point a is found at (-3,1)
Point B (4,-3)
Point C (2,3)
Point D (-1,4)
Multiply each value by the scale factor of 4..
x:
Point A = -3 * 4 = -12
Point B = 4*4=16
Point C= 2*4=8
Point D=-1*4=-4
y:
Point A= 1*4=4
Point B= -3*4=-12
Point C= 3*4=12
Point D= 4*4=16
Your dilated points are:
A : (-12,4)
B : (16,-12)
C : (8,12)
D : (-4,16)
Hope this helps!