Answer:
2x - y = - 3
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 = 2 , then
y = 2x + c ← is the partial equation
to find c substitute (- 1, 1 ) into the partial equation
1 = - 2 + c ⇒ c = 1 + 2 = 3
y = 2x + 3 ← in slope- intercept form
the equation of a line in standard form is
Ax + By = C ( A is a positive integer and B, C are integers )
rearranging the slope- intercept form of the equation from above
2x + 3 = y ( subtract y from both sides )
2x - y + 3 = 0 ( subtract 3 from both sides )
2x - y = - 3 ← in standard form