Answer:
the bottom graph in the first photo
Step-by-step explanation:
it is a function, unlike the others, because that graph is the only one where the x values dont repeat. in order for it to be a function, the x values cannot repeat
Scale factors of negative numbers are contractions
scale factors of numbers greater then 1 are expansions
scale factors of numbers greater then 0 but less then 1 are contractions
Short side is 4, long side is 8.
Math: I made a rectangle with double the area. I took that number and found the multiples. 1x32, 2x16, 4x8. 4 is half of 8, so its the shorter side.
17.5
This is because if you do the math: (7/40)*100 you get 17.5!
So divide 7 by 40 and then multiply it by 100!
7/40=0.175
0.175*100=17.5
