Respuesta :

saharathor345

Answer:

2

Step-by-step explanation:

the x and y are being multiplied by 2 e.g. 1 × 2 is 2 and 2 × 2 is 4 so the constant is 2

Answer:

2

Step-by-step explanation:

y2-y1       4-2         2

-------- = --------- = ---------- = 2

x2-x1        2-1          1