Hi there!

For a system to have infinite solutions, the lines have to be the same. We can begin by rearranging the given equation into the format y = mx + b:
2y - 4x = 6
Move x to the opposite side:
2y = 4x + 6
Divide all terms by 2:
y = 2x + 6
The answer choice that matches this is the first one.
Answer:

Step-by-step explanation:

So,


Answer:
11/2
Step-by-step explanation:
The semi-major axis is 1/2 of the major axis, a, so a = 11/2.
First what you need to do is 4.2 x 0.6 and that will be you answer.