What is the solution to the following system? y = 5
-3x + 4y = 8

1. (-3, 5)

2. (-4, -20)

3. (5, 7)

4. (4, 5)

9514 1404 393

  4.  (4, 5)

Step-by-step explanation:

Use substitution to put the value for y in the second equation.

  -3x +4(5) = 8

  -3x = -12 . . . . . . . subtract 20

  x = 4 . . . . . . . . . . divide by -3

The solution is (x, y) = (4, 5).

1. minimum

2. 6400

3. eight

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