A line with a slope of 1/2 passes through the point (2,-1). What is the equation of this line ?

2 answers:

4 0

Equation of a line tha passes through thte point (x1,y1) and has a lsope of m is
y-y1=m(x-x1)

given
m=1/2
point is (2,-1)
x1=2
y1=-1

y-(-1)=1/2(x-2)
y+1=1/2(x-2)
if yo want slope intercept
y+1=1/2x-1
y=(1/2)x-2

lora16 [44]2 years ago

3 0

I believe the equation would be y=mx+b, m being slope, b being y-intercept, so it would mean that you need to plug in the numbers. I believe the final equation would be y=1/2x+(-1)

You might be interested in

Can someone help me out?

Kamila [148]

First you have to solve for x. X=32.
5*32-12=148
148=(3y-8).
y=52

7 0

3 years ago

Read 2 more answers

How many different ways can i select 2 of 6 candy bars?

Westkost [7]

You have 12 ways to select 2 of 6 candy bars.

8 0

3 years ago

(5•10^-2) x (2•10^3)

Andre45 [30]

Answer:

100

Step-by-step explanation:

5•10^-2= 5•1/100 an d that's equal to 1/20 if you divide it with (2•10^3)wich is equal too 2000

you will get 100 as a result

6 0

2 years ago

Read 2 more answers

Use the counting techniques from the last chapter. A bag contains three red marbles, four green ones, one fluorescent pink one,

sergiy2304 [10]

Answer:

The probability that she gets all the red ones, given that she gets the fluorescent pink one, is P=0.0035 or 0.35%.

Step-by-step explanation:

Susan grabs four marbles at random.

We have to calculate the probabilities that he picks the 3 red ones, given that she already picked the fluorescent pink.

If it is given that the fluorescent pink is already picked, we are left with three red marbles, four green ones, two yellow ones, and four orange ones. A total of 13 marbles.

The probability that the second marble is red is 3 in 13.

The probability that the third marble is also red is 2 (the red marbles that are left) in 12 (the total amount of marbles left), as there is a picking without replacement.

The probability that the fourth marble is 1 in 11.

Then, the probability that the 3 red marbles are picked, is:

$P=P_1\cdot P_2\cdot P_3=\dfrac{3}{13}\cdot \dfrac{2}{12}\cdot \dfrac{1}{11}=\dfrac{6}{1716}=0.0035$