Answer:
d
Step-by-step explanation:
<h3>
Answer: B) Complex numbers</h3>
Complex numbers are always in the form a+bi with 'a' and 'b' as real numbers.
If b = 0 and 'a' is nonzero, then a+bi = a+0i = a which is strictly a real number
If a = 0 and b is nonzero, then a+bi = 0+bi = bi indicating that the number is now purely imaginary
1. graphing a line with a slope of -2 would just be a horizontal line passing through (0,-2)
2. not enough information given to solve
3. x=4 is a completely vertical line passing through (4,0)
4. the slope of y=0 would be 0
5. y=-3 is a completely horizontal line passing through (0,-3)
6. not enough information given to solve
The answer is 12. X - 1/2y = -6 can be rewritten in slope intercept form as
-1/2y = -x -6. Multiply everything by -2 to simplify and the equation is y = 2x + 12.