Question

What is the equation of the linear function represented by the table?

x
y
–5
14
–2
11
1
8
4
5
y = negative x + 9
y = negative x + 13
y = x + 13
y = x + 9

Answer 1

Slope = (11−14)/(−2−(−5)) = −3/3 = −1, so y = −x + b. Use (1,8): 8 = −1 + b → b = 9. Answer: y = −x + 9.