Question

Can someone check this?

Answer 1

I think it 3/2

Answer 2

How did you conclude that b = 3/2?

Answer 3

i dont know if I can explain it very well

Answer 4

range= {y-|a|+c<y<|a|+c,yeR}

Answer 5

thats kind of what I used

Answer 6

since a is positive
|a| =a

Answer 7

okay so then you have 1+4

Answer 8

you have
-a+b = -1
a+b =4

Answer 9

so then b=4?

Answer 10

no......if you add those, you indeed get b=3/2
you're correct, i was just showing you the method :)

Answer 11

I'm still wondering why we care about the sign of 'a'. If the range is [-1,4], the midpoint of the Range is 3/2. Who cares about 'a'?

Answer 12

true,
even if a is negative, range won't change