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x = 1, 2, 3 , 4 ,5
y = 15, 12, 9, 6, 3
Write an equation which describes the rule in the following table:

Sagot :

X goes by 1s

And y goes by 3s

Answer:

  • y = -3x + 18

Step-by-step explanation:

We can see:

  • x- values increase by 1 unit
  • y- values decrease by 3 units (slope is -3).

This is a linear relationship. Use point-slope form to find the equation:

  • y - 15 = -3(x - 1)
  • y = -3x + 3 + 15
  • y = -3x + 18