Linear vs. Exponential

A core Algebra I skill: deciding whether data is linear or exponential. A linear function changes by a constant amount each step (you add); an exponential function changes by a constant ratio (you multiply). These are real, released Regents questions — read each table or description and pick the model that fits.

Question 1 of 30

Linear vs. exponential — choose the model

Which table of values best models an exponential decay function?

Table (1)

x	f(x)
-2	7
-1	4
0	1
1	-2
2	-5
3	-8

Table (2)

m	f(m)
0	200
1	180
2	162
3	146
4	131
5	118

Table (3)

n	f(n)
0	200
0.5	210
1	220
1.5	231
2	242
2.5	254

Table (4)

p	f(p)
-3	-2
-2	-5
-1	-6
0	-5
1	-2
2	3

Your score appears when you finish.

For teachers

Standard, common misconceptions, and suggested use will live here.