Question

The price for footballs is displayed in the graph. Derive the equation of the proportional relationship through the origin.

(1 point)
Responses

y=3x
y is equal to 3 x

y=18x
y is equal to 18 x

y=9x
y is equal to 9 x

y=4x
y is equal to 4 x
Skip to navigation

Answer 1

y = 9x

Reason: the relationship is proportional so the line goes through the origin. From the graph a point is (2, 18), so slope = rise/run = 18/2 = 9, giving y = 9x.