Question

Help please in y= mx + b form

Answer 1

y = -
`(1)/(2)` x - 8

Explanation:

The equation of a line in slope- intercept form is

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

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 4, - 6) and (x₂, y₂ ) = (2, - 9) ← 2 points on the line

m =
`(-9+6)/(2+4)` =
`(-3)/(6)` = -
`(1)/(2)`

Note the line crosses the y- axis at (0, - 8) ⇒ b = - 8

y = -
`(1)/(2)` x - 8 ← equation of line

Answer 2

y= -2 x -8

4

Explanation:

-8 is on the y axis

rise over run u rise -2 run to the side 4