Suppose we define subtraction in zm to be the inverse of addition: (a - b) mod m = c in zm if (c + b) mod m = a. is subtraction well defined in z5? that is, for every pair a, b ∈ {0, 1, 2, 3, 4} is there a unique c ∈ {0, 1, 2, 3, 4} such that (a - b) mod 5 = c? what about in z6?

answer are

step-by-step explanation:

step-by-step explanation:

bob the banana

the equation of the parallel line would be y = 2x + 9

step-by-step explanation:

to start we need to find the slope of the original line. we can do that by looking at the coefficient of x, which is 2

since the slope of the original line is 2 and parallel lines have the same slope, we know the new line will also have 2 slope. now we can use that along with the point given in point-slope form to get the find equation.

y - y1 = m(x - x1)

y - 5 = 2(x + 2)

y - 5 = 2x + 4

y = 2x + 9