Answer:
The slope m = -2
Explanation:
The slope-intercept form of an equation of a line:
![y=mx+b](https://img.qammunity.org/2020/formulas/mathematics/high-school/8nudzfk4b5l0arb9iixag2w8am6zn99zlr.png)
m - slope
b - y-intercept
We have the equation in the standard form:
![6x+3y=12](https://img.qammunity.org/2020/formulas/mathematics/middle-school/e3xjcuwscu9qrxwsxcps04gkn5k3eod74a.png)
Convert to the slope intercept form:
subtract 6x from both sides
divide both sides by 3
![y=-2x+4](https://img.qammunity.org/2020/formulas/mathematics/middle-school/gnzxe17uexzh53kp1raoo5405reqq5zuah.png)
slope: m = -2
y-intercept: b = 4