Question

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

x | 2 | 4 | 6
y | 1 | 0 | –1

Answer 1

f(x)=-1/2x+4

Slope is your rate of change which is -1/2x and your y-intercept is (0,4) or just 4 if you write it in a function.