NEED HELP ASAP WILL MARK BESTT

a = 36

Step-by-step explanation:

For the system to have no solution, the two lines must have the same slope and different y -intercept, that is, be parallel lines.

The slope of the first line is "-1/2" (negative one half) when we solve for y:

so we want the slope of the second line to be the same, and the y-intercept to be different:

We see that the y-intercepts are different, so all is needed now is to find the appropriate a that gives a slope = -1/2, and that a value is 36.

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