Answer:
y = - 9x + 1
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y-intercept )
here m = - 9, hence
y = - 9x + c ← is the partial equation
To find c substitute (1 , - 8) into the partial equation
- 8 = - 9 + c ⇒ c = - 8 + 9 = 1
y = - 9x + 1 ← equation of line
