What is the ratio of a:b, knowing that a-b/a+b = 3/5.

4:1

Step-by-step explanation:

=

4-1 = 3

4+1 = 5

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.