<u>Answer:</u>
A. The color of fire when different metals are burned.
<u>Explanation:</u>
Qualitative data is data that relates to a quality or characteristic of an object, and does not include any numbers.
example: colour, taste, survey answers
Quantitative data, on the other hand, relates to measurements and counting of variables, and uses numbers to convey value.
example: height of a person, number of coins
-18 +15x = y
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Remember how the tangent function is defined as

Now where exactly are the vertical assymptotes? Well, where cosx = 0, because anything over 0 is undefined, and where a value is undefined, you are required to draw a vertical assymptote.
Now where exactly are the x interecepts? Well, where sinx = 0, because remember, an x-intercept is where y = 0, or where it crosses the x-axis, meaning where the tangent function is equal to 0.
So the x-intercepts are at where sinx = 0.
Y=-4x because all you have to do is move the variable to the right by adding its opposite to both sides. So 4x+y-4x=0-4x. Then eliminate the opposites y=0-4x
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