Question

Please answer correctly

Answer 1

`\boxed{(b) \: y = 2x - 1}`

Explanation:

Find the gradient

( 2,3 ) and ( 0, -1)

`m = (y2 - y1)/(x2 - x1) = ( - 1 - 3)/(0 - 2) = ( - 4)/( - 2) = 2`

Gradient is 2

Find linear equation

y - y1 = m ( x - x1 )

y - 3 = 2 ( x - 2 )

y - 3 = 2x - 4

y = 2x - 4 + 3

`\boxed{y = 2x - 1}`

Answer 2

y=2x-1

Explanation:

up 2 right 1 for slope

y intercept is -1