The standard form equation that matches would be:
3x + y = 9
Let’s start by listing the equation in slope-intercept form:
y = -3x + 9
To get the standard form equation, we need to get the equation into the format of “Ax + By = C.” To do so, we add 3x to both sides of the equation. That would look like:
3x + y = -3x + 3x + 9
Now, we can simplify:
3x + y = 9
That is your final standard form conversion.