How many solutions does the system of equations below have? y = - 9/7 x - 6
y = - 9/7 x + 1/6
a
one solution
b
infinitely, many solutions
c
no solutions
d
two solutions

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?

How can you find the mean absolute deviation (mad) for this set of data?