Asystem of equations is given below. y=1/2x-3 and -1/2x-3. which of the following statements best describes the two lines?

they have the same slope but different y-intercepts, so they have no solution.
they have the same slope but different y-intercepts, so they have one solution.
they have different slopes but the same y-intercept, so they have no solution.
they have different slopes but the same y-intercept, so they have one solution.

"They have different slopes but the same y-intercept, so they have one solution" is the statement which best describes the two lines.

Option D

Step-by-step explanation:

Given equations:

As we know that the slope intercept form of a line is  

                             y = m x + c  

So, from equation 1 and equation 2 we can see that

So, from the above expressions, we can say that both lines have different slopes but have same y – intercept with one common solution when x = 0.

the radius is 2 times the diameter.

step-by-step explanation: