Which equation represents the relation that is shown in the graph?
A.y=x+2/7
B.y=x+7/2
C.y=2/7x
D.y=7/2x

Answer:
D
Step-by-step explanation:
First let's notice a couple things:
So let's go in order of our realizations.
Let's start with figuring out what b is. By simply looking at the graph, we can see that b = 0, because the line starts at (0, 0). Remember that b is when the line crosses the y axis, and our y value at x = 0 is 0.
This crosses out A and B.
Now let's find m, aka the slope. We can figure this out using the slope formula:
[tex]m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} \\m=\frac{14-7}{4-2} \\m=\frac{7}{2}[/tex]
Awesome! So we've figured out that m = 7/2. This means our answer has to be D.