Answer:
Step-by-step explanation:
Move the x over because the x can’t be negative then you have 2= x+4 then you move the 4 over by subtracting and you have -2 and you have x=-2
We do not know the answer because there is no figure below.
Answer:
:The height of the building is 30ft
Step-by-step explanation:
<h3>
Answer: Choice C</h3>
Why isn't choice C a function? It's because we have the input x = 4 lead to more than one output at the same time (y = 5 and y = -5). A function must have all allowed inputs lead to exactly one output.
The diagram for choice C shows we have the points (4,5) and (4,-5). If we plotted those two points, then a vertical line forms, which will show this relation fails the vertical line test.
Choices A, B, and D do not have this happen where a certain input leads to multiple outputs at once; therefore, these are all functions. For the tables A and D, note there aren't any repeated x values. If you were to convert choice C into table form, then you would have the x value 4 repeat itself.
Here are the answers:
1) C
2) A
3) D
4) B
