You are right - the first wave IS y=sinx.
However
You need to look harder at the two graphs to see what is the same and what is different about them.
Fill in this table
Graph1 y=sinx | graph 2 ? | |
wavelength | ||
midline | ||
amplitude | ||
y intercept |
For each graph, where is the y intercept in terms of the midline?
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Question 1-
Desmos Graph: https://www.desmos.com/calculator/0ozgnesvrp (From checking afterward.)
a) Midline: y = -1
b) y-intercept: -1
c) Wavelength: π
d) Amplitude: 1
e) Does it start going up or down?: It begins moving upwards.
f) What is the equation?: y = 1 sin x -1
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Question 2-
Desmos Graph: https://www.desmos.com/calculator/ig7vrwjg8m (From checking afterward.)
a) Midline: y = 4
b) y-intercept: 4
c) Wavelength: π
d) Amplitude: 1
e) Does it start going up or down?: It begins moving downwards.
f) What is the equation?: y = -1 sin x + 4
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