Question

Write an equation that relates the number of tennis balls (y), with the number of cans (x). (Do not put spaces between numbers, variables, and operations)

Answer 1

y = 3x

Explanation:

Since, line given in the graph passes through origin (0, 0), relation between the number of tennis balls (y) and the number of cans (x) will be proportional.

y ∝ x

y = kx

Here 'k' = proportionality constant

Since the given line is passing through (1, 3),

3 = k(1)

k = 3

Therefore, equation of the line will be,

y = 3x