Question

The table shows the relationship between a, the area of a rectangle, and h, its height, when the base remains constant.

Which equation represents the relationship between h and a?

Question 13 options:

a = h + 6


a = 3h + 2


a = 4h


a = 2h + 4

Answer 1

a = 4h.

Explanation:

Area (a) = base (b) * height (h).

When h = 2, a = 8:

a = bh

6 = 2b

b = 4

The result 4 is the same for h = 5, 7 and 12.

So the required equation is

a = 4h.