Answered

12.As x increases in the equation 5x + y = 7, what happens to the value of y?
a. increases
b. decreases
c. does not change
d. cannot be determined​

Sagot :

AGBOIIGO

Answer:

LETTER B (decreases)

Step-by-step explanation:

To distinguish if what happens to the value of y. We will test some points:

When x = 1

  • 5x + y = 7
  • 5(1) + y = 7
  • 5 + y = 7
  • y = 7 - 5
  • y = 2

When x = 2

  • 5x+y = 7
  • 5(2)+y = 7
  • 10+y = 7
  • y = 7 - 10
  • y = -3

When x = 3

  • 5x + y = 7
  • 5(3) + y = 7
  • 15 + y = 7
  • y = 7 - 15
  • y = -8

Noticing the behavior of the test points. As x increases , the value of y decreases.

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