Question

I know its a reduction but idk how to find the scale factor.

Answer 1

take each point and find it's corresponding point on the original triangle

reduced / original = scale factor

for example (2,-2) corresponds to (6,-6) on the original

Answer 2

Look at the x-axis.
What is the distance between the two points of the large triangle that are on the x-axis?

Answer 3

2 points

Answer 4

all together it would be 12 points

Answer 5

and what about the smaller triangle?

Answer 6

isnt it 2?

Answer 7

each line on the graph represents 2.
http://puu.sh/gG4Sg.png

Answer 8

oh then 4

Answer 9

4/12=?

Answer 10

sorry, for hijacking @mathstudent55