Posted by **Robert** on Tuesday, November 20, 2012 at 11:59am.

Any number in the form of a+-bi , where a and b are real numbers and b not equal 0 is considered a pure imaginary number. TRUE OR FALSE

The minimum value is the smallest y-value of a function. T RUE OR FALSE

i2 = square root of -1. TRUE OR FALSE

Complex numbers can be graphed on the xy coordinate plane. TRUE OR FALSE

- Algebra 2 help :) -
**mathfailure**, Tuesday, November 20, 2012 at 12:01pm
1. true it is not a real number

2 that is true, when graphing a function or a parabola, the minimum value is the smallest y value

3 i^2 = -1, thus it is false

4 complex numbers CANNOT be graphed on the coordinate plane (where would we put it?!) so false

- Algebra 2 help :) -
**Damon**, Tuesday, November 20, 2012 at 12:04pm
False (is complex not imaginary)

Yes I suppose although you can have a local minimum

I guess you mean i^2, but that is just -1

On the complex plane x and i y

- Algebra 2 help :) -
**Steve**, Tuesday, November 20, 2012 at 12:04pm
1. FALSE. pure imaginary numbers a+bi have a=0

4. TRUE. a=bi is graphed as the point (a,b)

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