Respuesta :

bekkarmahdi702

Answer:

y=-3x-1

Step-by-step explanation:

We khow the the equation of the graph function have this form : y=mx+c

  • Let f be our function
  • m= (f(1)-f(-1)]/[1-(-1)]=(-4-2)/2= -3
  • so y= -3x+c
  • let's replace x and y by the coordinates of a khown point to calculate c
  • (1, -4) ⇒ -4= -3*1+c ⇒ c= -4+3 ⇒ c= -1
  • y= -3x-1

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