All categories

3 years ago

Rewrite the point-slope equation in slope-intercept form: y - 3 = 2(x + 4)

Mathematics

1 answer:

Olin [163]3 years ago

7 0

Answer:

y = 2x + 11

Step-by-step explanation:

y - 3 = 2(x + 4)

y - 3 = 2*x + 2*4

y -3 = 2x + 8

y = 2x + 8 +3

y = 2x + 11

You might be interested in

Will give brainliest!!

kherson [118]

Answer:

Step-by-step explanation:

i think, quick math if you doubt me wait for another answer

7 0

3 years ago

Read 2 more answers

I NEEDDD HELPPPP PLEASE ILL GIVE U BRAINLEST

zepelin [54]

-2/1 I did this is math class , we’re on this unit to,

Explanation
Saying it’s a negative number because it is pointing in a left word position, you have to go down twice and over once to find the exact point where the line crosses over a point on the graph, and there you will get -2/1

4 0

3 years ago

Read 2 more answers

Lesson CHECK 1. Paula spent of her allowance on clothes and on entertainment What fraction of her allowance did she spend on oth

steposvetlana [31]

45 over 48 because 3 over 8 times 1 over 6 equals 3 over 48 and 48 take away 3 equals 45

5 0

3 years ago

A truck is traveling at 74.5 kilometers per hour away from you. The driver is blowing the horn which has a frequency of 415 Hz.

Sphinxa [80]

fo = 335 Hzlet fo = frequency heard
f = actual frequency 
v= speed of sound 
vs = speed of source 

For the first one, 
fo = fv/(v - vs) 
74.5 km/h = 20.69 m/s 
vs = -20.69m/s since it is moving away from you 

fo = (415Hz)(346m/s)/(346m/s - (-20.69m/s)) 
fo = 392 Hz 

For the second one, 
fo = fv/(v - vs) 
82.8 km/h = 23 m/s 
vs = 23m/s 

fo = (312Hz)(331m/s)/(331m/s - (23m/s))

5 0

3 years ago

Read 2 more answers

Arrange these functions from the greatest to the least value based on the average rate of change in the specified interval.

Romashka [77]

By definition, the average change of rate is given by:
$AVR = \frac{f(x2)-f(x1)}{x2-x1}$
We will calculate AVR for each of the functions.
We have then:

f(x) = x^2 + 3x interval: [-2, 3]:
$f(-2) = x^2 + 3x = (-2)^2 + 3(-2) = 4 - 6 = -2

f(3) = x^2 + 3x = (3)^2 + 3(3) = 9 + 9 = 18$
$AVR = \frac{-2-18}{-2-3}$
$AVR = \frac{-20}{-5}$
$AVR = 4$

f(x) = 3x - 8 interval: [4, 5]:
$f(4) = 3(4) - 8 = 12 - 8 = 4 f(5) = 3(5) - 8 = 15 - 8 = 7$
$AVR = \frac{7-4}{5-4}$
$AVR = \frac{3}{1}$
$AVR = 3$

f(x) = x^2 - 2x interval: [-3, 4]
$f(-3) = (-3)^2 - 2(-3) = 9 + 6 = 15

f(4) = (4)^2 - 2(4) = 16 - 8 = 8$
$AVR = \frac{8-15}{4+3}$
$AVR = \frac{-7}{7}$
$AVR = -1$

f(x) = x^2 - 5 interval: [-1, 1]
$f(-1) = (-1)^2 - 5 = 1 - 5 = -4

f(1) = (1)^2 - 5 = 1 - 5 = -4$
$AVR = \frac{-4+4}{1+1}$
$AVR = \frac{0}{2}$
$AVR = 0$

Answer:
these functions from the greatest to the least value based on the average rate of change are:
f(x) = x^2 + 3x
f(x) = 3x - 8
f(x) = x^2 - 5
f(x) = x^2 - 2x

5 0

4 years ago