1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ladessa [460]
3 years ago
15

Part A

Physics
1 answer:
geniusboy [140]3 years ago
4 0

Answer:

a) b = -5

b) slope = 3/2

Explanation:

a) The equation of a line is given as y = mx + b, where m is the slope of the line and b is the intercept on the y axis.

Given that y = 3x + b and it passes through the point (2, 1). Hence when x = 2, y = 1. Therefore, substituting for x and y:

1 = 3(2) + b

1 = 6 + b

b = 1 - 6

b = -5

b) The equation of a line passing through two points (x_1,y_1) and x_2,y_2 is given by:

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

The equation of the line passing through the two points (0,3) and (4,9) is:

y-3=\frac{9-3}{4-0}(x-0)\\ \\y-3=\frac{3}{2}x\\ \\y = \frac{3}{2}x+3

Comparing y = (3/2)x + 3 with y = mx + b, the slope (m) is 3/2

You might be interested in
The burner on a stove is 325° f. given that the burner emits electromagnetic radiation as a blackbody, what is the maximum wavel
lesantik [10]
To solve this, we use the Wien's Displacement Law as shown in the attached picture. First, convert the temperature to Kelvin. 

C to F:
C = (F - 32)*5/9
C = (325 - 32)*5/9 = 162.78 °C

C to K:
K = C + 273
K = 162.78 + 273 = 435.78 K

λmax = 2898/435.78 = <em>6</em><em>.65 μm</em>

5 0
3 years ago
Four football players are running down the field at the same speed. Player 1 weighs 180 lbs and is running toward the south goal
ANTONII [103]
Player 4 ..................
3 0
3 years ago
Read 2 more answers
Without friction, what happens? Check ALL
Fudgin [204]
A is the answerrrrrrrrrrrr
7 0
3 years ago
An electric kettle is rated at 2kW. How much energy is transferred in 30s?
jenyasd209 [6]

<em>answer \\  = 30000 \: joule \\ solution \\ p =  \frac{energy}{time}  \\ power = 2kw = 2000 \: w = 2000j/s \\ (since \: 1 \: kw = 1000 \: j / s) \\ energy \: transformed \\  = power \times time \\  = 1000 \:j /s \times 30 \: s \\  = 30000 \: joule \\ hope \: it \: helps</em>

5 0
3 years ago
Read 2 more answers
Equal and opposite forces that act on the same object are called __________ forces. A. balanced B. operative C. neutral D. unbal
gizmo_the_mogwai [7]
<span>Equal and opposite forces that act on the same object are called balanced forces.</span>
6 0
3 years ago
Other questions:
  • True or false ? Radiant energy is generated by a petunia on Tuesday.
    13·2 answers
  • Which determines the reactivity of an alkali metal? A. its boiling and melting points B. the shininess of its surface C. the num
    8·2 answers
  • Which of the following represents a virtual image? ​
    8·1 answer
  • Which of these experiments would make use of qualitative data?
    15·2 answers
  • A chemical hazard symbol means you should not inhale fumes or let the chemicals contact your skin.
    9·1 answer
  • Consider a helium balloon with volume 2.1 L.
    12·1 answer
  • a hammer of mass 5 kg travelling at 4 metre per second is a nail directly and does not rebound what is the impulse of the hammer
    9·1 answer
  • A skateboarder drops in off the top of one side of the half pipe shown below. She does not push off and starts from rest. She st
    13·1 answer
  • Identify two ways in which friction is not useful in science​
    13·1 answer
  • Your current exam mean is 97.2. if you receive a 99 on the next exam, this will have the effect of ______.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!