Answer
$y = 2x - 6$
Work Step by Step
The equation of the line is $y = mx + b$, where m is the slope, and b is the y-intercept. Look for the y-intercept of the graph. This is where the line cuts the y-axis. When you look at the graph, you see that $-6$ is the y-intercept. This is the equation so far.
$y = mx -6$
Now, plug in a random point on the line. We will use $(3,0)$
$0 = 3m - 6$
$3m = 6$
$m = 2$
We have got the slope of the line, and now, we can complete the equation.
$y = 2x - 6$
