Question

Question 1 of 5 The graph shows a proportional relationship. Which equation matches the graph? 10 4 A. Y = 3 B. Y = 5.1 c. y = 15.2 Do y = x < PREVIOUS

Answer 1

A proportional relationship between y and x can be written as:

$y=k\cdot x$

where k is the constant of proprotionality.

We can find the value of k when x=1 as y=k*1=k.

We see in the graph that for x=1, the value of y is y=5, so the constant of proportionality k is 5 and the equation is y=5x.

Answer: y=5x