ghost95
ghost95 ghost95
  • 03-10-2019
  • Mathematics
contestada

This system has one solution.

What is the y-coordinate of the solution?

Y=2x+2 y=x^2+3

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altavistard
altavistard altavistard
  • 07-10-2019

Answer:

y = 4

Step-by-step explanation:

equate these two equations, obtaining 2x+2 = x^2+3.  Solving this for x, we get:

x^2 - 2x - 2 + 3 = 0, or x^2 - 2x + 1 = 0.  This is equivalent to (x - 1)^2 = 0.  There's a double root here:  x = 1 and x = 1.

Since Y=2x+2, y = 2(1) + 2, or y = 4, when x = 1.

The y-coordinate of the solution is y = 4.

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