55:03 C D
10
Which statements justify that the dilation of triangle
STU is an enlargement increasing its size by the
magnitude of the scale factor? Select two options.
U
The triangle pre-image is closer to the point of
dilation than the image.
The triangle image is closer to the point of dilation
than the pre-image.
The value of the scale factor,
is between 0 and 1
The value of the scale factor, 6, is greater than 1.
The vertices of the pre-image are collinear with the
vertices of the image.

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."