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mel-nik [20]
2 years ago
9

Pls tell I will mark u brainliest…please://

Mathematics
1 answer:
nikdorinn [45]2 years ago
5 0

first you tell me you are a boy or girl

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2 years ago
Help please! Could you explain it too?
Anettt [7]

Answer:

a) not proportional

b) proportional; k = -\frac{3}{5}

Step-by-step explanation:

a) for any proportional equation, the line must pass through the origin. The equation in a) is y = 4x + 1, and the '+1' is the y-intercept. This means that the line does not pass through the origin, so x and y cannot increase by the same amount (i.e. they are not proportional).

Another way to determine this is is to use the y = kx base. If you have an equation that fits that it's likely proportional.

Here, if the equation was only y = 4x then it'd be proportional because u can see that k = 4. This is not the equation though, and the 4x + 1 doesn't fit to the y = kx formula so it can't be proportional.

b) straight away you can see that there's no 'c' term (y = mx + c) which means the y-intercept is 0, so the line passes through the origin. While this does not immediately mean the line is proportional, you can make sure that it is by checking it fits with the y = kx equation.

y = -(3/5)x fits with y = kx, with k being -3/5

3 0
2 years ago
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igomit [66]

Answer:

20 hours.

Step-by-step explanation.

The total distance traveled was 400 miles. Then I divided 400 by 20. I got 20.

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3 years ago
ASAP!! What is the parabola’s line of symmetry? <br> y-axis <br> x-axis <br> x = p <br> x = -p
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Answer:

y-axis

Step-by-step explanation:

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3 years ago
What is the negative reciprocal of 2
Zinaida [17]

Answer:

- \frac{1}{2}

Step-by-step explanation:

The reciprocal of a number n is \frac{1}{n}

The negative reciprocal is the negative of this, thus

reciprocal of 2 is - \frac{1}{2}

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3 years ago
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