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Alex787 [66]
3 years ago
8

Find the slope and the y-intercept of y=9x-2

Mathematics
2 answers:
Anna71 [15]3 years ago
5 0

Answer:

The Slope is 9 and the y-intercept is -2

Step-by-step explanation:

natta225 [31]3 years ago
3 0

Answer: slope=9

Y-intercept=-2

Step-by-step explanation:

Use y=mx+b where m equals slope and b equals y-intercept

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The domain and range of 5x squared plus 10x what is the domain and range of f of x equals 5x squared plus 10x
liberstina [14]

Answer:

Domain:  set of all real numbers

Range:  y \geq  -5

Step-by-step explanation:

We have to find the domain and range of the function:

f(x) =5x^2+10x

This is a quadratic function, shape of a "U", that's called a parabola.

The domain is the set of x values for which the function is defined.

The range is the set of y values for which the function is defined.

Normally, any parabola in the form  ax^2+bx+c  has domain as "all real numbers". This is the case for this problem as well, thus,

Domain = set of all real numbers

Now, for the range, we have to look at the minimum value of the function. So, the range would be y values greater than or equal to the minimum number. Lets find the minimum value of this function.

We have to find the value of x for which the minimum occurs by using the formula:

x=\frac{-b}{2a} =\frac{-10}{2(5)} =-1

<em><u>Note: value of a is "5" and b is "10"</u></em>

Now, we plug this into the function to find the minimum value:

f(x)=5x^2+10x\\f(-1)=5(-1)^2 +10(-1)\\f(-1)=-5

So, the range is set of all real numbers greater than or equal to -5.

8 0
3 years ago
I have two fair dice both numbered 1 to 6. I throw both dice and add both numbers together. What is the probability that the num
Alex17521 [72]

Answer:7/36

Step-by-step explanation:

Firstly, I would draw a table to visually see what the outcomes are. There are many methods but this is what i find to be the easiest so here it goes!!!

I hope the pic helps! If you have any questions feel free to ask!

7 0
3 years ago
Please help me with my maths homework asap. Thank youuu
notka56 [123]
A = 3.141 * (3km^2). Just put that into a calculator and bingo
5 0
3 years ago
Read 2 more answers
Abdullah earns $10 an hour delivering newspapers on his bicycle . He started with $20 in his bank account. what is the rate and
elixir [45]

Explanation:

The equation for this problem can be modeled in y = mx + b form.

m represents the rate of change and b represents the initial value or constant.

y = 10x + 20

x represents the number of hours he spent delivering newspapers

y is his total money after whatever number of hours he worked

The rate is 10, because it determines how much money he earns for each hour.

The y-intercept is 20, representing the starting amount of money in his bank account.

6 0
3 years ago
A student took a system of equations, multiplied the first equation by 2 and the second equation by 3, then added the results to
egoroff_w [7]

Answer:

system 4.

Step-by-step explanation:

3x+6y=9

multiply by 2

6x+12y=18   ....(1)

-2x+-4y=4

multiply by 3

-6x-12y=12   ...(2)

add (1) and (2)

0+0=30

which is impossible .It has no solutions.

3 0
3 years ago
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