Question

What is the rate of change and initial value for the linear relation that includes the points shown in the table?
x y
1 20
3 10
5 0
7 −10

Initial value: 20, rate of change: 10

Initial value: 30, rate of change: 10

Initial value: 30, rate of change: −10

Initial value: 20, rate of change: −10

Answer 1

Do you know what the initial value is?

Answer 2

no

Answer 3

i tried a and d and i got it wrong

Answer 4

What is the first y in this table?

Answer 5

20

Answer 6

Often the initial value is when x = 0 but in this case it is the first value on the table.

Answer 7

What is the difference between the 1st y and the 2nd y?

Answer 8

10

Answer 9

the initial value can still start at x==0 because it wasnt placed yet when x=0 y will be 30

Answer 10

True!^

Answer 11

Your initial value is 30, and the difference is (-10) because it dropped 10 from x = 1 to x = 2

Answer 12

so its between b and c because i got a and d wrong before

Answer 13

good explanation though i thought the same til i saw the chart

Answer 14

thank you