24 which ordered pair is the best estimate for the solution of the system of equations? y=−12x+4 y=12x−3 a(7, 0) b(7, 1) c(7.5, 0.5) d(7, 0.5)

  D  (7, 0.5)

Step-by-step explanation:

The equations must be interpreted to be ...

A graph shows the solution to be (7, 0.5), matching selection D.

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You can add the two equations together to get ...

  (y) +(y) = (-1/2x +4) + (1/2x -3)

  2y = 1 . . . . . simplify

  y = 1/2 . . . . .divide by 2

It can be convenient to use the second equation to find x.

  1/2 = 1/2x - 3

  1 = x - 6 . . . . . . multiply by 2

  7 = x . . . . . . . . . add 6

The solution is (x, y) = (7, 0.5). . . . . matches selection D.

4/3

Step-by-step explanation: