Question

Look at the graph shown:

Answer 1

it's y-intercept (0,-1) and (1,2)
so
slope = (2+1)/(1-0) = 3

equation should be y = 3x − 1

answer: y = 3x − 1

Answer 2

Answer:

$y =3x-1$

Step-by-step explanation:

Given is a picture of coordinate plane in which a line passes through (0,-1) and (1,2)

Since two points are given, we can use two point formula.

Using the two point formula,

$\frac{x-0}{1-0} =\frac{y+1}{2+1}$

Simplify to get

$3x=y+1\\y =3x-1$

So correct answer is option b

$y =3x-1$