y=-1/2x +1
1) Let's start by finding the slope between these points:
2) Since we know the slope then we can proceed to find the linear coefficient/y-intercept by plugging one point and that slope into the slope-intercept formula:
point (0,1)
y=mx +b Plug point (0,-1)
1=0(-1/2) +b Multiply by 0
1 = b
b = 1
3) Having the slope and the linear coefficient we can write the linear equation out:
y=-1/2x +1