How do you write the equation y+9=-3(x-2) in standard form?

Explanation:
Recall that the standard form of the equation of a line is:
y=mx+b
where:
y=y-coordinate
m=slope
x=x-coordinate
b=y-intercept
Converting to Standard Form
Start by simplifying the right side of the equation.
y+9=-3(x-2)
y+9=-3x+6
Subtract -9 from both sides.
y+9-9=-3x+6-9
Simplify.
y=-3x-3

Explanation:
Given y+9=-3(x-2) rewrite in standard form which for linear first order is:
y=mx+b
y+9=-3x+6 subtract 9 from both sides
y=-3x+6-9=-3x-3 this the standard form
y=-3x-3
Answer:
y=-3x-3