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s344n2d4d5 [400]
3 years ago
14

Which equation represents a proportional relationship?

Mathematics
2 answers:
umka2103 [35]3 years ago
8 0

As written here, both choices B and C represent proportional relationships:

... B. y = 12x

... C. y = 3x

_____

One key to a proportional relationship is that when one variable is zero, so is the other. This will not be the case for selections A and D.

Setler [38]3 years ago
7 0

Answer:

y=12x

y=3x

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope of the line m, and the line passes trough the origin

so

case A) y=-3x+2  

Is a linear equation but does not passes trough the origin

case B) y=12x

Is a linear equation and passes trough the origin-----> represent a proportional relationship

case C) y=3x  

Is a linear equation and passes trough the origin-----> represent a proportional relationship

case D) y=2(x+13)

Is a linear equation but does not passes trough the origin

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X + y = 4<br> y = -x + 4
rjkz [21]

Answer:

Infinite Solutions

Step-by-step explanation:

x + y = 4

y = -x + 4

x + y = 4

x - x + 4 = 4

0 = 0

5 0
2 years ago
A school has 300 students.If the ratio of boys to girls is 31 to 44, how many more girls are there in the school?
garri49 [273]

Answer:

there would be 52 more girls I think

Step-by-step explanation:

let x = multiplier then

31x =number of boys

44x = number of girls

Boys + girls = 300

44x + 31x =300

75x = 300

x = 300/75

x = 4 is the multiplier

therefore:

44*4 = 176 girls

31*4 = 124 boys

dif = 52 more girls than boys

hope this helped :)

5 0
2 years ago
PLEASE HELP ME WITH ALL THE QUESTION BE HONEST PLEASE URGENT!
harina [27]

Answer:

59

Step-by-step explanation:

1. -35

2. +9

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4. +3

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6. -7

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Add them all up in a calculator and you get 59

3 0
3 years ago
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wariber [46]
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3 years ago
The greater of two consecutive integers is 15 more than twice the smaller. Find the integers.
Vlad [161]

Well, we know that the two consecutive numbers have to be negative, because if it was positive, the smaller number multiplied by two would be much greater. (unless 1 and 2). So, by guessing and checking, we will get -13 and -14 :)

3 0
3 years ago
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