All categories

3 years ago

Which two points lie on a line with an undefined slope?

2 answers:

6 0

Slope formula is
m = (y2 - y1)/(x2 - x1)

A. m = (5 - 0)/(-2 + 2)
m = (5)/(0)
m = error

B. m = (-2 - 0)/(0 + 2)
m = (-2)/(2)
m = -1

C. m = (2 - 0)/(2 - 0)
m = (2)/(2)
m = 1

D. m = (0 - 0)/(2 - 3)
m = (0)/(-1)
m = 0

the undefined slope would be the one that came out as error, so A

Anna11 [10]3 years ago

3 0

Answer:

Option A. $(-2,0)$ and $(-2,5)$

Step-by-step explanation:

we know that

A vertical line has an undefined slope

The lines parallel to the y-axis are vertical lines

The points that lie on a vertical line has the same x-coordinate

In this problem

the points $(-2,0)$ and $(-2,5)$ has the same x-coordinate

therefore

The points lie on a line with an undefined slope (vertical line)

You might be interested in

PLEASE HELP (PRIME NUMBERS) DUE MONDAY 27th SEPTEMBER

AVprozaik [17]

36/3=12

12/6=2

2x3=6

so first box is 12, second is 2, last one is 3

4 0

3 years ago

Read 2 more answers

What is the absolute value of 2 and -2?

xeze [42]

If you mean |2-2| then the absolute value is 0

If you are talking about |2| |-2| then the absolute values are 2 and 2

6 0

3 years ago

Jolie uses childcare facilities at her gym. Her monthly dues are $32, and childcare is $9 per visit this month she does not wish

zimovet [89]

Answer:

Step-by-step explanation:

Let x= number of visits she makes

9(number of visits she makes) + 32 (less than or equal to) <= 122

9x+32<= 122

8 0

3 years ago

The 28th term of an ap is -5,find the common difference if the first term is 31

klemol [59]

Answer:

The common difference is -4/3.

Step-by-step explanation:

Recall that the direct formula for an arithmetic sequence is given by:

$\displaystyle x_n=a+d(n-1)$

Where n is the nth term, a is the initial term, and d is the common difference.

We are given that the first term a is 31.

We also know that the 28th term is -5. Hence, x₂₈ = -5. Substitute:

$\displaystyle x_{28}=-5=(31)+d(28-1)$

Solve for d. Simplify:

$-5=31+27d$

Thus:

$\displaystyle 27d=-36$

Divide both sides by 27. Hence, the common difference is:

$\displaystyle d=-\frac{36}{27}=-\frac{4}{3}$

7 0

3 years ago

Read 2 more answers

The mean salary of public school teachers in the United States in 2012 was $50,547 with a standard deviation of $9,000. Assume t

trapecia [35]

Answer:

Percentage of public school teachers who earn less than $32,547 = 2.3%

Step-by-step explanation:

We are given that the mean salary of public school teachers in the United States in 2012 was $50,547 with a standard deviation of $9,000. Also, salaries are normally distributed.

Let X = Salary of public school teachers

So, X ~ N( $\mu = 50,547 , \sigma^{2} = 9000^{2}$ )

The standard normal z score distribution is given by;

Z = $\frac{X-\mu}{\sigma}$ ~ N(0,1)

So, percentage of public school teachers who earn less than $32,547 is given by = P(X < $32,547)

P(X < 32,547) = P( $\frac{X-\mu}{\sigma}$ < $\frac{32,547-50,547}{9000}$ ) = P(Z < -2) = 1 - P(Z <= 2)

= 1 - 0.97725 = 0.02275 or 2.3%

Therefore, percentage of public school teachers who earn less than $32,547 is 2.3% .

7 0

4 years ago