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scoray [572]
2 years ago
13

Y = 2x - 3 What is the y intercept

Mathematics
2 answers:
aivan3 [116]2 years ago
7 0

Answer:

-3

Step-by-step explanation:

y = mx + b

(x,y) variables

m: slope of line

<em>y</em><em>=</em><em>2x-3</em><em> </em><em>the</em><em> </em><em>slope</em><em> </em><em>would</em><em> </em><em>be</em><em> </em><em>2</em><em>/</em><em>1</em><em>,</em><em> </em><em>rise</em><em> </em><em>over</em><em> </em><em>run</em>

b: y-intercept

vfiekz [6]2 years ago
3 0

Answer:

Y-intercept = -3

Step-by-step explanation:

This equation is written in Slope Intercept Form or y = mx+b Form, where b represents the y-intercept and m represents the slope of the equation.

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4x+6=2x+10 find value of x makes equation true
forsale [732]

Answer:

x = 2

Step-by-step explanation:

4x + 6 = 2x + 10 \\  \\ 4x - 2x = 10 - 6 \\  \\ 2x = 4 \\  \\ x =  \frac{4}{2}  \\  \\ x = 2

5 0
3 years ago
Read 2 more answers
Mary can type six letters in 20 minutes, Maggie can type five letters in 20 minutes, and Su Ying can type two letters in 20 minu
Grace [21]

Answer:

Step-by-step explanation:

After 20 minutes, will all of them working together, they would have typed 13 letters. Then after another 20 minutes, it would be 26. Then 39. But after that is gets tricky. Mary types a letter every 3 minutes. Maggie types a letter every four minutes. and Su Ying types a letter every 10 minutes. After 6 minutes, the total would go to 42 letters. Then another 3 minutes it would be 44 letters. And finally, Su Ying finishes it. Taking a total of 70 minutes, or 1 hour and 10 minutes.

Mark Brainliest Please, And I'm Glad I Could Help. (If I Did) :) Have A Good Day!

8 0
3 years ago
A researcher wanted to see if giving a selective serotonin reuptake inhibitor (anti-depressant) would decrease the number of sel
Delvig [45]

Answer:

a. The mean of the sample is M=35.

The variance of the sample is s^2=39.125.

The standard deviation of the sample is s=6.255.

b. z=-1.6

c. SEM = 2.212

Step-by-step explanation:

The mean of the sample is M=35.

The variance of the sample is s^2=39.125.

The standard deviation of the sample is s=6.255.

<u>Sample mean</u>

<u />M=\dfrac{1}{8}\sum_{i=1}^{8}(27+25+32+40+43+37+35+38)\\\\\\ M=\dfrac{277}{8}=35

<u>Sample variance and standard deviation</u>

<u />s^2=\dfrac{1}{(n-1)}\sum_{i=1}^{8}(x_i-M)^2\\\\\\s^2=\dfrac{1}{7}\cdot [(27-(35))^2+(25-(35))^2+(32-(35))^2+(40-(35))^2+(43-(35))^2+(37-(35))^2+(35-(35))^2+(38-(35))^2]\\\\\\

s^2=\dfrac{1}{7}\cdot [(58.141)+(92.641)+(6.891)+(28.891)+(70.141)+(5.64)+(0.14)+(11.39)]\\\\\            s^2=\dfrac{273.875}{7}=39.125\\\\\\s=\sqrt{39.125}=6.255

b. If the population mean is 45, the z-score for M=35 would be:

z=\dfrac{M-\mu}{\sigma}=\dfrac{35-45}{6.255}=\dfrac{-10}{6.255}=-1.6

c. The standard error of the mean (SEM) of this group is calculated as:

SEM=\dfrac{s}{\sqrt{n}}=\dfrac{6.255}{\sqrt{8}}=\dfrac{6.255}{2.828}=2.212

4 0
3 years ago
If A is (-2,6) and B is (4,-2), what is the midpoint of AB
sashaice [31]
Given two points:
A(x₁,y₁) and B(x₂,y₂) the midpoint would be:
M((x₁+x₂)/2 , (y₁+y₂)/2)
In this case:_
A(-2,6) and B(4,-2); the midpoint would be:
M((-2+4)/2 , (6-2)/2)=(1,2)

Answer: the midpoint of AB is (1,2)
4 0
3 years ago
I need help with the problem 6= -w/8
Kitty [74]
I am not sure but,- ___ divided by 8 would give you 6?
8 0
3 years ago
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