Question

Which graph represents a function that has an output value of 2 for the input value of –1?



Choose the THREE correct graphs.


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image.pngWhich graph represents a function that has an output value of 2 for the input value of –1?



Choose the THREE correct graphs.


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Answer 1

I can’t see the images you pasted. Please either upload the five graphs (as image files) or describe each graph near x = −1 (what point(s) it has there — solid dot, open circle, curve passing through, etc.).

How to check yourself:
- You want the graph to have the point (−1, 2) as part of the graph — that is, when x = −1 the y-value is 2.
- Look at the vertical line x = −1. If the graph has a filled/solid point at y = 2 where that vertical line meets it, that graph qualifies.
- If the graph has an open circle at (−1,2) (a hole) and no filled dot there, it does NOT qualify (the function is not defined to equal 2 at x = −1).
- If the vertical line x = −1 intersects the graph at some other y-value (not 2), that graph does NOT qualify.
- If x = −1 intersects the graph in more than one y-value (vertical line crosses the graph more than once), the relation is not a function, so it cannot be a function with output 2 at x = −1.

Send the images or descriptions and I’ll pick the three correct graphs.