Question

Helpp meeeee
Does the following set of ordered pairs satisfy a linear function?
{(1, -5), (2, -3), (3, -1), (4, 1), (5, 3)}
A:Yes. Both the x- and y-values are positive.
B:No. There is no constant change in x- or y-values.
C:No. Several domain values are paired with two range values.
D:Yes. A constant change of +1 in x corresponds to a constant change of +2 in y.

Answer 1

it is D; for every x input, y increases by 2. so therefore it is a linear function

Answer 2

Listen to hlee, he is correct. Because the y changes at the same speed the whole time for every 1 x, the slope never changes. A function with a constant slope is linear.