Question

The height y of a balloon, in feet, after x seconds is shown in the table below. Which equation represents the relationship between x and y?A: y=8x+6B: y=8x-6C: y=6x+8D: y=6x+40I think it's D but I want your opinion too!

Answer 1

The height y of a balloon, in feet, after x seconds is shown in the table below.

Which equation represents the relationship between x and y?



x y

5 46

10 86

15 126

20 166

The correct option is A: y=8x+6

when x = 5 ,

y = 8( 5 ) + 6 = 40 + 6 = 46

when x = 10

y = 8( 10 ) + 6 = 80 + 6 = = 86

when x = 15,

y = 8 (15 ) + 6 = 120 + 6 = 126

when x = 20,

y = 8 (20 ) + 6 = 160 + 6 = 166