Question

The graph below represents a proportional relationship, where x represents the number of pounds of blueberries and y represents the cost, in dollars. Write an equation, in the form y=kx, that describes the relationship. PLZZZ HELP ME

Answer 1

Answer:

y = 4x

Step-by-step explanation:

Given:

x = number of pounds of blueberries

y = cost ($)

Required:

An equation that describes the relationship between x and y in the form, y = kx.

SOLUTION:

First, find the value of k, which is the constant of proportionality.

Constant of proportionality, from the graph given = rise/run

The rise/run between the two points on the line will give you the constant of proportionality.

Thus,

$k = \frac{rise}{run} = \frac{20}{5} = 4$

k = 4.

Substitute k = 4 into y = kx

We would have the equation:

y = 4x