What is the range of the function above Show calculations to

What is the range of the function above?

Show calculations too please - thanks!

y = -2x +5

Domain : -1<=x<=5

at x=-1 ; y= -2*(-1) +5 = 8

at x= 5 ; y = -2(5) +5 = -4

So, the Range is [-4 , 8 ] closed interval as thes values are included in the range

So, we can represnt as [-4,8] or -4<=y<=8 both are correct