Algebra 1 questions 10pts

A)Solve the system of equations
x+6y=7 (1)
x=2-6y (2) Answer will be as an ordered pair

B)Solve the system of equations
7x-9y=-36
9y-7x=36
What is the solution of the system? Is the system consistent or inconsistent? Are th equations dependent or independent?

C)Simplify: 3[-56-(36-6)]

D) Find the indicated outputs for f(x)=25x-3x
f(0)= f(-1)= f(2)=
Thank you for your help!

A) there is no solution, since these represent parallel lines.

If x= 2-6y, substitute into the first equation.2-6y+6y=7
2=7.

This is a false statement.

B) the solution is infinite, since any point on the first line is also on the second. These are the same line.

7x-9y=-36
9y-7x=36-> -7x+9y=36

If you multiply one equation by -1, you will get the other equation. If you add the equations, you get 0=0, which is true for all x.

These are consistent, because they agree, and dependent, because they are the same.

C)3[-56-(36-6)]. This is order of operations, starting with the innermost parentheses.

3[-56-30]
3(-86)
-258

D)f(x)= 25x-3x or 22x

Then f(0)= 25(0)-3(0) or 22(0)= 0

f(-1)= 22(-1)= -22

f(2)= 22(2)= 44

Hoping this helps!

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b is no solution.