Question

x=-1 y=1
x=0 y=4
x=1 y=7
x=2 y=10
x=3 y=13
what is the equation that represents the relationship between x and y

Answer 1

determine the slope between points for starters; if its the same it linear

Answer 2

On the x-side, you are adding 1 and on the y-side you are adding 3, so this is an "add-add" relationship in some math books.
This means that every time you move along the x-axis 1, you rise up 3

Answer 3

that tells you it is linear