Question

Can i please have help

Answer 1

y= - x -1

Explanation:

ran it through Desmos

I can't find a way to expllain

it if i would put y= - 1 (becaues remember -1 is where the lines intersected with the y axis)

all there would be was a straight

line across -1 but since its goin down 1

you need the - x to give it a negative tilt

how u UNderstan

Answer 2

y = - x - 1

Explanation:

The equation of a line in slope- intercept form is

y = mx + b ( m is the slope and b the y- intercept )

Calculate m using the slope formula

m =
`(y_(2)-y_(1) )/(x_(2)-x_(1) )`

with (x₁, y₁ ) = (- 2, 1) and (x₂, y₂ ) = (0, - 1) ← 2 points on the line

m =
`(-1-1)/(0+2)` =
`(-2)/(2)` = - 1

The line crosses the y- axis at (0, - 1 ) ⇒ b = - 1

y = - x - 1 ← equation of line