Ask question

Ask question

All categories

4 years ago

8

Which is an equation in point-slope form for the line that passes through the points (−1,4) and (3,−4) ?

2 answers:

Pachacha [2.7K]4 years ago

8 0

The correct anwser is y-3=-2(x+4)

Alex73 [517]4 years ago

5 0

Its A
^^^^^^^^^^^^^^^^^^

You might be interested in

3. A person standing 3 feet away from the base of a lamp post casts a shadow 4 feet long. If the person is 6 feet tall and walks

german

Answer:

533.33 ft/min

Step-by-step explanation:

We are given that

x=3 feet

y=4 feet

Height of person,h=6 feet

$\frac{dx}{dt}=400 ft/min$

Triangle ABC and A'B'C are similar because all right triangles are similar

By using similarity property

$\frac{h'}{6}=\frac{7}{4}$

$h'=10.5 feet$

$x+y=3+4=7 feet$

$\frac{h'}{6}=\frac{x+y}{y}$

$\frac{10.5}{6}=\frac{x+y}{y}$

$10.5y=6x+6y$

$10.5y-6y=6x$

$4.5y=6x$

Differentiate w.r.t t

$4.5\frac{dy}{dt}=6\frac{dx}{dt}$

$\frac{dy}{dt}=\frac{6\times 400}{4.5}ft/min$

$\frac{dy}{dt}=533.33ft/min$

Hence, If the person is 6 feet tall and walks away from the lamp post at a speed of 400 feet per minute then his shadow moving at the rate 533.33 ft/min

7 0

3 years ago

The value of y is inversely proportional to the value of x. When y=42, x=6.

NARA [144]

Because $x$ and $y$ are inversely proportional, there is some constant $k$ such that

$xy=k$

Given that $y=42$ and $x=6$ , we have

$k=6\times42=252$

So when $x=9$ , you have

$9y=252\implies y=\dfrac{252}9=28$

4 0

3 years ago

Find the distance between 9, 7 and 3,2

Elden [556K]

Answer:683 km

Step-by-step explanation:

4 0

4 years ago

Please help! Will mark brainliest

Gennadij [26K]

It’s the third one.

144. 6 x 6 = 36

36 x 8 = 288

288 divided by 2 ( divide by half the dotted line)

answer : 144

7 0

3 years ago

If Dwayne drinks 48 bottles of water in 12 days, how many bottles of water will he drink in 4 days?

ikadub [295]

Answer:

16

Step-by-step explanation:

48/12=4 bottles per day

4x4=16

7 0

2 years ago

Read 2 more answers