Answer:
(3,6.3), (7, 14.7)
Step-by-step explanation:
For this question, you want to find the values where 2.1×x is the same as y. It's mostly just trial and error.
x is always first in the bracket, so by multiplying it by 2.1, you would get y (the second value) if it applies.
3*2.1=6.3, so the first one is true.
6.3*2.1=13.23, so the second one is false.
2.1*2.1=4.41, so the third one is false.
7*2.1=14.7, so the fourth one is true.
10.5*2.1=22.05, so the fifth one is false.
14.7*2.1=30.87, so the sixth one is false.
This leaves the first one (3,6.3) and the fourth one (7, 14.7) as true.
** This is mostly algebra, so you may want to look at that. If this question was supposed to be done without a calculator, look at multiplying decimals too. I'm always happy to help!
