NEED HELP 5 questions

Graph the image of this triangle after a dilation with a scale factor of 2 centered at the origin.
Use the polygon tool to graph the triangle.
first image

Graph the image of this figure after a dilation with a scale factor of 2 centered at the origin.
Use the polygon tool to graph the dilated figure.
second image

Graph the image of this figure after a dilation with a scale factor of 1/2 centered at the origin.
Use the polygon tool to graph the dilated figure.
three image

Graph the image of this figure after a dilation with a scale factor of 2 centered at (-3,1)
Use the polygon tool to graph the dilated figure.
four image

Graph the image of this figure after a dilation with a scale factor of 1/3 centered at the point (4,-2)
Use the polygon tool to graph the dilated figure.
Five image