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Which equation represents a proportional relationship?
1. y = 7x – 3
2. y = 150x
3. y = 21x
4. y = 2x + 1 (please put an explnation

Respuesta :

Mykellh0915

Answer: 4

Step-by-step explanation:

Let's solve for x.

2x+1=y

Step 1: Add -1 to both sides.

2x+1+−1=y+−1

2x=y−1

Step 2: Divide both sides by 2.

2x

2

=

y−1

2

x=

1

2

y+

−1

2

Answer:

x=

1

2

y

raphealnwobi

The equation in the form y = kx, that represent a proportional relationship is:

2. y = 150x

3. y = 21x

Two variables are said to be proportional if as one variable increases, the other variable increase or vice versa.

Proportional relationship is in the form:

y = kx

where k is a constant.

Hence the equation in the form y = kx, that represent a proportional relationship is:

2. y = 150x

3. y = 21x

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