This graph shows a proportional relationship. What is the constant of proportionality?

Enter your answer as a ratio in simplified form by filling in the boxes.

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d

step-by-step explanation:

- (2, -7)

- lines r and s and lines t and u must be parallel

d

step-by-step explanation:

the two points from this line are   (0,4)   & (2,-2)

we can call

now, lets find the slope (m):

now finding b (the y intercept). this is the point at the y-axis where the line cuts the axis. looking at the graph, it is y = 4. so the point is 4. hence b = 4

the slope-intercept form is given by  

putting the points, we have:

d is the correct answer.