Respuesta :
Answer:
C
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 = - 3, so
y = - 3x + c ← is the partial equation
T find c substitute (2, - 1) into the partial equation
- 1 = - 6 + c ⇒ c = - 1 + 6 = 5
y = - 3x + 5 ← in slope- intercept form
Add 3x to both sides
3x + y = 5 ← in standard form → C
Answer:
C. 3x + y = 5.
Step-by-step explanation:
Using the point-slope form of the equation of a straight line:
y - y1 = m(x - x1) where m = the slope and (x1, y1) is a point on the line.
So substituting we have:
y - (-1) = -3(x - 2)
y + 1 = -3x + 6
y = -3x + 5
3x + y = 5.
