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
ElenaW [278]
3 years ago
9

Help please I get y=mx+b but I'm not sure how to do this

Mathematics
2 answers:
Fofino [41]3 years ago
8 0

(3,4)  (9,7)

to find the slope

m = (y2-y1)/(x2-x1)

  = (7-4)/(9-3)

3/6

1/2

The slope is 1/2

point slope form

y-y1 = m(x-x1)

y-4 = 1/2(x-3)

distribute

y-4 = 1/2x -3/2

add 4 to each side

y = 1/2 x -3/2 + 4

y = 1/2 x -3/2 + 8/2

y = 1/2 x + 5/2

this is in slope intercept form

zhenek [66]3 years ago
8 0

y = \frac{1}{2} x + \frac{5}{2}

the equation of a line in slope-intercept form is

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (3, 4 ) and (x₂, y₂ ) = (9, 7 )

m = \frac{7-4}{9-3} = \frac{3}{6} = \frac{1}{2}

y = \frac{1}{2} x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (3, 4 ) then

4 = \frac{3}{2} + c ⇒ c = \frac{5}{2}

y = \frac{1}{2} x + \frac{5}{2} ← equation in slope-intercept form




You might be interested in
Perimeter of 40 triangles when the sides are all 1 cm long
Marianna [84]

Answer: 120 cm.

Step-by-step explanation: Each triangle has 3 sides, and each side is 1 cm. Multiply the number of sides for one triangle by the total number of triangles. 3 x 40=120. The perimeter is 120 cm.

7 0
2 years ago
Ben made a sundial in his backyard by placing a stick with height 6 in. straight into the ground, and marking the hours in the g
Sunny_sXe [5.5K]

Answer:

B and D

Step-by-step explanation:

5 0
3 years ago
Please help me with this homework
nikitadnepr [17]

Answer: 12 units

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Translate the phrase to an algebraic expression “half of a number”
telo118 [61]

Answer:

1/2x or x/2

Step-by-step explanation:

You're taking the number you started with and either multiplying it by 1/2 half or dividing it by 2.

5 0
2 years ago
Find the equation of the line.
hoa [83]

Answer:

y=3x+3

Step-by-step explanation:

To find the slope, find two points and use the rise over run.

Some points you can use are (0, 3) and (1, 6)

The rise is 3 and the run is 1.

3/1 = 1.

The slope is 3.

To find the y-intercept, find the point where x = 0.

(0, 3)

The y-intercept is 3.

Now you can write an equation.

y=mx+b

m is the slope and b is the y-intercept.

y=3x+3

5 0
3 years ago
Other questions:
  • long as 27 stickers, She gives 3 stickers to each of her friedns. Whith how many friends did Lin share her stickers.​
    15·2 answers
  • How are fraction and decimals related
    15·2 answers
  • 11 more than five of a certain number is twenty more than 2 times of that number. What is the number
    13·1 answer
  • When the cost of a car is multiplied by 0.05 the result is $1750, find the cost of the car?
    13·1 answer
  • What is 0.875 as a fraction
    13·1 answer
  • I need help choosing which two equations tool el to find the individual massses of A and B
    9·1 answer
  • Convert 0.0001 to a power of 10.
    13·2 answers
  • 10. What is the value of x in this equation?
    8·1 answer
  • PLEASE PLEASE PLEASE HELP! WILL GET ZERO!!
    7·1 answer
  • Help me plz . im confused..
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!