Question

write a function rule the relates the inout X and output Y:

(0,1), (1,4), (2,7), (3,10)

please help! I can't get this one..

Answer 1

BTW, I meant, "write a function rule that relates the input X and output Y" =)

Answer 2

as the x's increase by 1, the y's increase by 3
so the slope = 3/1 = 3
the equation must be
y = 3x + b, where b is the y-intercept
but we can see from (0,1) that the y-intercept is 1
so...

y = 3x + 1

Answer 3

thank you very much =)