Answer: Not a function
<u>Step-by-step explanation:</u>
The graph fails the vertical line test. In other words, when you draw a vertical line anywhere through the curve, the line passes through two points.
Bonus: If you do not have a graph, it is not a function if there is one x-value that has two different y-values.
For example, If (1, 2) and (1, -2) lie on the curve, then it is NOT a function because the x-value (1) has two different y-values (2 & -2).
Answer:
1
Step-by-step explanation:
Answer: A & C
Step-by-step explanation:
![i=\sqrt{-1}](https://tex.z-dn.net/?f=i%3D%5Csqrt%7B-1%7D)
![\sqrt{-1} *\sqrt{4} =\sqrt{-4}](https://tex.z-dn.net/?f=%5Csqrt%7B-1%7D%20%20%20%2A%5Csqrt%7B4%7D%20%3D%5Csqrt%7B-4%7D)
You can also simplify the above by taking the -4 out of the radical
It becomes 2 x
, which can be simplifed to C
1.a. correct
1.b. ![\sqrt{121} - \sqrt{9} = 11 - 3 = 8](https://tex.z-dn.net/?f=%20%5Csqrt%7B121%7D%20-%20%5Csqrt%7B9%7D%20%3D%2011%20-%203%20%3D%208%20)
1.c. correct
1.d. ![-\sqrt{36} - \sqrt{100} = -6 - 10 = -16](https://tex.z-dn.net/?f=%20-%5Csqrt%7B36%7D%20-%20%5Csqrt%7B100%7D%20%3D%20-6%20-%2010%20%3D%20-16%20)
2.a. 7 - x + 3w - 9
Terms: 7, -x, 3w, -9
Variables: x, w
Coefficients: -1, 3
Constants: 7, -9
2.b. -g + 8k - 3 - 7
Terms: -g, 8k, -3, -7
Variables: g, k
Coefficients: -1, 8
Constants: -3, -7
3.a. correct
3.b. correct
3.c. -5+ 4x = -x
4.a. 4(2x + 3) = 8x + 12
4.b. -2(3x + 4) = -6x - 8
4.c. -5(2x - 3) = -10x + 15