Need help only on these two problems please

9514 1404 393

  3)  (x, y) = (-2, 8)

  5)  (x, y) = (-3, -7)

Step-by-step explanation:

3) The expression for y can be substituted into the other equation.

  4x +16 = 3x +14

  x = -2 . . . . . . . . . . subtract 3x+16 from both sides

  y = 3(-2) +14 = -6 +14 = 8

The solution is (x, y) = (-2, 8).

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5) Substitute for y in the first equation.

  -x +2(4x +5) = -11

  -x +8x +10 = -11

  7x = -21 . . . . . . . . . subtract 10

  x = -3 . . . . . . . . . . . divide by 7

  y = 4(-3) +5 = -12 +5 = -7

The solution is (x, y) = (-3, -7).

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!

can someone answer this question plz

step-by-step explanation: