It makes it easy to under stand the measurement of the graph.
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No. An irrational number is still a real number - it lives on the number line.The square root of -1 (known as i) is an imaginary number. It is on the imaginary axis of the complex plane.A number with components from the real axis and the imaginary axis is a complex number, and is on the complex plane.
Longitudinal or longitude lines are the imaginary lines that are perpendicular to the equator. Latitudinal or latitude lines are parallel to the equator.
Imaginary numbers are not a subset of the real numbers; imaginary means not real.
NONE If both roots are imaginary, the means the parabola does NOT cross the x-axis at all. The place where a function crosses the x- axis has the coordinate (x,0) for some value of x. That means if you plug in x to the function or polynomial, you get 0. This is equivalent to saying that x is a root of the polynomial. But if the only roots are imaginary, there will be no point (x,0) for any real number x.
A line perpendicular to the y-axis is a horizontal line (slope = 0) and is of the form y = b Therefore the required line is y = 5