2.6/4.1 = 5.3/y rounded to the nearest hundreth

2.6

4.1

=

5.3

y

y=8.357692

Step-by-step explanation:

2.6y=21.73

2.6y\cdot \:100=21.73\cdot \:100

260y = 2173

\frac{260y}{260}=\frac{2173}{260}

y=\frac{2173}{260}

last one.

step-by-step explanation:

last one.

generally speaking, the others follow some sort of pattern that correlates to either linear (looks like a straight line) or sinusoidal (looks like an s).

the last one is just a random cloud of points that doesn't correlate to any particular known order.