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4 years ago

What is the y intercept of f(x)= -2x - 1

Mathematics

2 answers:

Paul [167]4 years ago

8 0

The y-intercept of

f(x) = -2x - 1

is y = -1 .

zloy xaker [14]4 years ago

4 0

This function is in slope-intercept form, which uses the following formula:

$y = mx + b$

m is the slope, and b is the y-intercept of the line.

In f(x) = -2x - 1, the slope is 2, and the y-intercept is -1, or (0, -1).

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Rachael walked 214 miles in 15 minutes, and Julie walked 334 miles in 25 minutes. Could you tell me who is faster, please?

katrin [286]

Answer:

Rachael is faster.

you can tell by finding the unit amount.

Step-by-step explanation:

I can tell by finding the unit amount. (miles per minute)

Rachael:

214/15 = 14.2666666667 or about 14.27

Julie:

334/25 = 13.36 miles per minute.

5 0

3 years ago

Step by step how do you solve ratios and proportions?

Lisa [10]

Answer:

A proportion is an equality of two ratios.

...

Things to remember

Determine whether the ratio is part to part or part to whole.

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3 years ago

Please help if you can

dolphi86 [110]

Answer:

x=4 or x=-5/7

Step-by-step explanation:

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3 years ago

What fraction is equal to 3 1/9 ?

Masteriza [31]

Answer:

28/9

Step-by-step explanation:

We will have to convert the given question into improper fraction before solving

So let's solve the question

3 1/9

Can be written as 28/9 which is improper fraction

Since there's nothing that can be used to divide both the numerator and denominator

Then our final answer is 28/9

But in the case where the fraction can be divided we can actually solve further

7 0

3 years ago

Read 2 more answers

Emily and her children went into a grocery store and she bought $20.80 worth of bananas and peaches. Each banana costs $0.80 and

MakcuM [25]

Answer:

The number of bananas that Emily bought was 6 and the number of peaches that Emily bought was 8

Step-by-step explanation:

<u><em>The complete question is</em></u>

Emily and her children went into a grocery store and she bought $20.80 worth of bananas and peaches. Each banana costs $0.80 and each peach costs $2. She bought a total of 14 peaches and bananas altogether. Determine the number of peaches and the number of bananas that Emily bought

Let

x ----> the number of bananas that Emily bought

y ----> the number of peaches that Emily bought

we know that

She bought a total of 14 bananas and peaches altogether

$x+y=14$ -----> equation A

She bought $20.80 worth of bananas and peaches

$0.80x+2y=20.80$ -----> equation B

Solve the system by graphing

Remember that the solution is the intersection point both graphs

using a graphing tool

The solution is the point (6,8)

see the attached figure

therefore

The number of bananas that Emily bought was 6 and the number of peaches that Emily bought was 8

3 0

4 years ago