Question

The slope of the line 2x +y =1 is

Answer 1

we can write as y=1-2x
its in the form of y=mx+c
m is slope 

So here -2 is slope of gvn eqn 2x+y=1

Answer 2

Slope form of line equation ax+by+c=0 is -a/bit

.°. Slope form of given line equation 2x+y-1=0 is -2/1 =-2