Explain how to write a function rule from the table below. Then write a function rule.

Question

x: 2, 4, 6
y: 1, 0, -1
please help, I don't know how to find the answer

Answer 1

the function rule tells you how to get y from x

x is increasing by 2, while y decreases by 1
... this means the slope is -1/2

try some values to see if you can find the y-intercept