functions exam

Question 1

what is the difference between the ‘a’ and ‘k’ value

Answer 1

the k value is the coefficient in factored form
the a value is the coefficient in standard form (everything expanded

Question 2

how to find the a value (formula for equation from a data table question)

Answer 2

a=CD/n!

CD = common difference (once doing all of the differences)
n = the degree (found from what difference you got a CD)