Ask question

Ask question

All categories

2 years ago

9

Write an equation in point-slope form and slope-intercept form for each line: Passes through (3,-6) and (-1,2)

1 answer:

ratelena [41]2 years ago

3 0

Slope intercept form is y=m(x)+b
M is the slope to find it you do the first y value minus the second y value and do the same for x
-6-2. 3+1
You then divide the subtracted y values by the subtracted x values
-8/4
M=-2
To find the b you plug in one set of the coordinates
-6=-2(3)+b
-6=-6+b
b=0
So the equation is
Y=-2x

You might be interested in

Joanna needs a book to prop up a table leg. She randomly selects a book , and selects another book . What is probability that sh

Stolb23 [73]

Id say 40%
because 8 are math so 9 of them are other

3 0

2 years ago

webassign If a snowball melts so that its surface area decreases at a rate of 6 cm2/min, find the rate at which the diameter dec

drek231 [11]

Answer:

The answer is $\frac{3}{10\pi } cm/min$

Step-by-step explanation:

Assuming the snowball is a perfect sphere, then if A denotes the surface area and D the diameter then:

$A=4\pi r^{2} = 4\pi (\frac{D}{2} )^{2} =\pi D^{2}$

Differentiating wrt r we have:

$\frac{dA}{dD} =2\pi D$

We are told that $\frac{dA}{dt}= -6$ and we want to find $\frac{dD}{dt}$

By the chain rule we have:

$\frac{dA}{dD}=\frac{dA}{dt}.\frac{dt}{dD}=\frac{\frac{dA}{dt} }{\frac{dD}{dt} }$

∴ $2\pi D=-\frac{6}{\frac{dD}{dt} }$

∴ $\frac{dD}{dt}=-\frac{6}{2\pi D}$

When D=10 then

$\frac{dD}{dt} =-\frac{6}{10*2\pi } =-\frac{3}{10\pi }$

The sign (-) shows that the D is decreasing.

3 0

2 years ago

Nine actors audition for four different parts in a play in how many ways can the director fill these roles ?

podryga [215]

Answer:126

Step-by-step explanation: your welcome

5 0

2 years ago

Math assignment I need help ASAP

sweet-ann [11.9K]

Answer:

Option B: -4 - 15x - 10 + 4x = -45

Step-by-step explanation:

The second step of the equation is to distribute 5 to the numbers in the parenthesis

6 0

2 years ago

What is the equivalent ratio of 3/10

tresset_1 [31]

Answer:

6/20

Step-by-step explanation:

multiply 3 x 2 then 10 x 2 and you will have an equivalent ratio. Theres alot more of them but heres a simple one.

6 0

2 years ago

Read 2 more answers