In its simplest form the domain is all the values that go into a function, and a range is all the values that come out.
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The coefficient of x is the slope of the line , So the slope of the above equation is -3 .
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Remember from now on ,
Product of multiplying the slopes of two lines which are perpendicular to each other , is -1 .
Thus ;
m is the slope of the line which we want.
Negatives simplifies
Divide sides by 3
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We have following equation to find the point-slope form of the linear functions :
x(0) and y(0) are the coordinates of the point which the line passed through.
Add sides 8
Done....
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16.5 mg of calcium per tablet × 20 tablets=
330 mg of calcium