The linear equation in the graph is:
y = (-3/2)*x
How to find the linear equation?
A general linear equation in the slope-intercept form is written as:
y = a*x + b
Here we can see that the line passes through the point (0, 0), thus, the y-intercept is y = 0, so:
y = a*x + 0
y = a*x
We also can see that the line passes through (2, -3), replacing these values:
-3 = a*2
-3/2 = a
The linear equation is:
y = (-3/2)*x