Question

Find the equation of this line (-2,1); m=2

Answer 1

y = mx + c

put m=2

y = 2x + c

(x,y) = ( -2,1 )

1 = 2(-2) + c

1 + 4 = c

5 = c

y=2x + 5

Therefore the equation is 2x-y+5=0