B. The graph that best represents the equation y = |x| - 1 is the option B.
To solve this problem we have to try with some values, the symbol |x| is the absolute value which means any number either positive or negative always is positive |-5| = 5 and |5| = 5.
Let's take x = -3, -2, -1, 0, 1, 2, 3.
For x = -3
y = |-3| - 1 = 3 - 1
y = 2
For x = -2
y = |−2| - 1 = 2 - 1
y = 1
For x = -1
y = |−1| - 1 = 1 - 1
y = 0
For x = 0
y = |0| - 1 = 0 - 1
y = -1
For x = 1
y = |1| - 1 = 1 - 1
y = 0
For x = 2
y = |2| - 1 = 2 - 1
y = 1
For x = 3
y = |3| - 1 = 3 - 1
y = 2
y ║ x
2 -3
1 -2
0 -1
-1 0
0 1
1 2
2 3
If we graph the points obtain in the table above, the result is a graph with the characteristics of the option B.
300 cm/s = (300*60*60/100000=10.8) km/h
I would say neither of the above.
A is incorrect because in the graph, the curves get shorter over time, and if you were riding the same Ferris wheel, the curves would be the same size the whole time, because the Ferris Wheel would stay the same shape and height.
B is incorrect because the height increases then decreases and increases and decreases, etc, while the description is simply, a descending paper plane.
C is incorrect because it wouldn't be both of the above since they were both wrong.
