Question

Using the following table of ordered pairs, which of the following equations shows the linear relationship between the x and y variables? A. y = 4x B. y = x + 4 C. y = x - 4 D. y = -4x

x y
-1 -4
1 4
2 8

Answer 1

A

Explanation:

Answer 2

Option A.

y = 4x

Explanation:

We can easily find the solution to this equation by evaluatng each expression in the table and verifying if it holds true.

For instance, lets take the first case

A. y = 4x

first point (x,y) = (-1,-4)

x = -1

y = 4(-1) = -4

True

Second point (x,y) = (1,4)

x = 1

y = 4(1) = 4

True

Third point (x,y) = (2,8)

x = 2

y = 4(2) = 8

True

Option A.

y = 4x

is the correct answer