Answer:
y = 3x - 9
Step-by-step explanation:
Using point slope form equation
y - y1 = m(x - x1)
Given
Point = ( 6 , 9)
Slope = 3
x1 = 6
y1 = 9
y - 9 = 3(x - 6)
Using a slope intercept form equation
y = mx + c
Open the bracket
y - 9 = 3( x - 6)
y - 9 = 3x - 18
y = 3x - 18 + 9
y = 3x - 9
The equation of the line is
y = 3x - 9