59 points on this! Pls answer

(a) y = -4x + 4   (b) y = 2x + 3

solving steps:

note: m refers to slope and y₁ to y point and x₁ to x point

a)

coordinates: (2,-4)

slope: -4

equation:

b)

coordinates: (1,5), (-1,1)

slope:    

equation:

y = -4x + 4

y = 2x + 3

Step-by-step explanation:

Question 1

Slope-point form of linear function:

where is the slope and is a point on the line.

y - -4 = -4(x - 2)

⇒ y + 4 = -4x + 8

⇒ y = -4x + 4

Question 2

First find the slope using slope formula:

let = (1, 5)

let = (-1, 1)

Now use point-slope form of linear function:

   y - 5 = 2(x - 1)

⇒ y - 5 = 2x - 2

⇒ y = 2x + 3