Question

Write the equation of the line that goes through the point (2, -1) and has a slope of
-3.

Answer 1

y = - 3x + 5

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, thus

y = - 3x + c ← is the partial equation

To find c substitute (2, - 1) into the partial equation

- 1 = - 6 + c ⇒ c = - 1 + 6 = 5

y = - 3x + 5 ← equation of line

Answer 2

y=-3 -1

Explanation:

y=mx+b m=slope b= y intercept