Question

A linear function is represented by the equation y = 12x + 8. What is the difference between the y-values of the function at two consecutive integer x-values?

Answer 1

• 12

Explanation:

Let the consecutive x-values be n and n+1, then the difference between y-values:

• 12(n+1) + 8 - (12n + 8) =
• 12n + 12 + 8 -12n - 8 =
• 12