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Marta_Voda [28]
2 years ago
6

Which table shows a proportional relationship between x and y? A 0,4 1,8 2,12 B 0,0 1,1 2,4 C 1,4 2,8 3,12 D 1,2 2,4 3,8

Mathematics
1 answer:
irina1246 [14]2 years ago
8 0

Answer:

The correct option is C.

Step-by-step explanation:

The proportional relationship between x and y is defined as

y\propto x

y=kx

Where, k is constant of proportion.

In option A, the rate of change is constant because the value of y increased by 4 as the value of x increased by 1.

If a line passing through two points, then the equation of line is

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

The equation of a line

y-4=\frac{8-4}{1-0}(x-0)

y=4x+4

It is not in the form of y=kx. So, option A is incorrect.

In option B, the rate of change is not constant because the value of y is not increasing by a constant rate the value of x increasing by 1. So, option B is incorrect.

In option C, the rate of change is constant because the value of y increased by 4 as the value of x increased by 1.

The equation of a line

y-4=\frac{8-4}{2-1}(x-1)

y=4x

It is in the form of y=kx. So, option C is correct.

In option D, the rate of change is not constant because the value of y is not increasing by a constant rate the value of x increasing by 1. So, option D is incorrect.

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