Please help I don’t understand, picture below.

domain : -2 to 2

range : -1 to 1

function

Step-by-step explanation:

9514 1404 393

Step-by-step explanation:

The arrows on the ends of the red curve mean that the graph extends to infinity in those directions. For very large positive x, the y-value is very large; for very large negative x, the y-value is also very large.

Domain

The domain is the horizontal extent of the graph. The arrows mean the graph extends horizontally from -∞ to ∞. Written as an inequality, this is ...

  -∞ < x < ∞

Interval notation puts the limits in brackets: square brackets when the limit is included, and round brackets when the limit value is not included. Round brackets are used for infinity, which is not any specific number.

  (-∞, ∞)

__

Range

The range is the vertical extent of the graph. Here, the graph extends down to a value of y=1 at x=0, and upward to infinity. Written as an inequality, the range is ...

  1 ≤ y < ∞

In interval notation, this is ...

  [1, ∞)

__

Function

The graph shows the relation is a function if no vertical line can be made to intersect the graph in more than one place. Here, that is the case, so this is the graph of a ...

  FUNCTION

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour

what is the model?

step-by-step explanation: