Answer: x-intercept is -9
Step-by-step explanation: To find the x intercept y is 0 and to find the y intercept x is 0. 18 divided by -2 is -9, which is the answer
ANSWER
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EXPLANATION
A basic sine curve has equation in the form:
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Where 'a' is the amplitude.
In this case a=2 because the amplitude is 2.
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For a transformed sine function, the general equation is:
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where a=2 is still the amplitude
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This is also a sine function with an amplitude of 2.
Others include:
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
e.t.c
Answer:
−2x−8y−4z
Hope this is what you wanted :)