Answer:
The given equation 1 - x - 2y = -6 is in standard form, and can be converted to slope-intercept form (y = mx + b) by solving for y.
To do this, we first add x and 2y to both sides of the equation to get:
1 + x + 2y = -6
Next, we divide both sides of the equation by 2 to get:
(1/2) + (1/2)x + y = -3
Finally, we rearrange the equation to get:
y = -(1/2)x - 3
Therefore, the equation in slope-intercept form is y = -(1/2)x - 3.