Question

The slope and y-intercept of the line 2x+y+1=0 ​

Answer 1

2x + y + 1 = 0

This is a first degree equation with two unknown variables, x and y. They are referred to as linear equation and are typically represented in slope-intercept form, y=mx+b, where m is the slope of the line and b is the y-interecept. So you want to set the equation equal to y by isolating it to one side of the equation.

Subtract all term other than y (in this case, 2x and 1) from both sides of the equation.

2x + y + 1 - 2x - 1 = 0 - 2x - 1

y = -2x - 1

Answer 2

-2 is the slope and -1 is the y-intercept

Explanation:

2x+y+1=0

Subtract 2x from both sides

y+1=2x

Subtract 1 from both sides

y=-2x-1