Answer:
the final equation in slope-intercept form is y = 3x + 1.
Explanation:
To isolate y and change the equation 3x + y = -1 into slope-intercept form, we can use the following steps:
Subtract 3x from both sides of the equation to isolate y on the left side of the equation:
y = -3x - 1
Divide both sides of the equation by -1 to change the sign of y:
y = 3x + 1
This is the slope-intercept form of the equation, where 3x is the slope and 1 is the y-intercept. In slope-intercept form, the equation has the form y = mx + b, where m is the slope and b is the y-intercept.