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
uysha [10]
3 years ago
13

HELP AHHHHHHHHHHHHHHHH

Mathematics
1 answer:
allochka39001 [22]3 years ago
8 0

Answer:

y = 3x+4

Step-by-step explanation:

slope formula is changes of y over the changes of x

\large \boxed{m =  \frac{y_2-y_1}{x_2-x_1} }

m is slope in y = mx+b.

Substitute the coordinate points in.

\large{m =  \frac{7 + 2}{1 + 2} } \\  \large{m =  \frac{9}{3}} \\  \large{m = 3}

Since we know the slope, we rewrite by substituting m = 3 in the slope-intercept form.

\large{y = mx + b} \\  \large{y = 3x + b}

Then we either substitute one of given coordinate points to find the value of b. I will substitute (1,7) in the equation.

\large{7 = 3(1)+ b} \\  \large{7 = 3 + b} \\  \large{7 - 3 = b} \\  \large{4 = b}

Then rewrite the equation from y = 3x+b by substituting the value of b.

\large{y = 3x + b} \\  \large{y = 3x + 4}

You might be interested in
If construction costs are $160,000 per kilometer, find the cost of building the new road in the figure
MAVERICK [17]

Answer:

$4,160,000

Step-by-step explanation:

First, find the length of the new road in km using Pythagorean Theorem.

According to Pythagorean Theorem:

c² = a² + b²,

Where, c is the longest leg, which is the hypotenuse, a and b are the 2 other legs of the ∆.

Since we are calculating the lenght in km, convert each lenght of the two legs of the ∆ into km.

1 km = 1,000 m

10,000 m = 10 km

24,000 m = 24 km

c² = 24² + 10²

c² = 576 + 100

c² = 676

c = √676

c = 26 km

Lenght of the new road = 26 km

If cost of construction is $160,000 per kilometer, therefore, cost of constructing 26 km road = 160,000*26 = $4,160,000

7 0
3 years ago
How many feet are in 2000 meters?
11Alexandr11 [23.1K]
First, note that 1 meter is equal to 3.28084 feet.

Next, multiply 
2000 m • 3.28084 = 6561.68 ft
6 0
3 years ago
Read 2 more answers
Suppose 6 people chose oatmeal as their favorite breakfast food. How would you change the bar graph
lakkis [162]
Where is the graph what kind
5 0
3 years ago
Two wires are attached 6 feet up a tree and 3 feet from the base of the tree. About how much TOTAL wire was used?
nalin [4]

Answer:

9 cm²

Step-by-step explanation:

Two wires are attached 6 feet up a tree and 3 feet from the base of the tree. About how much TOTAL wire was used?

We solve the above question, using the Area of a Triangle

Area = 1/2 × Base × Height

Area = 1/2 × 3 × 6

Area = 9 cm²

Therefore, the total wore that was used was 9cm² of wire

3 0
3 years ago
Write an equation (y=mx+b) through the points: (3,-1) and (8,9)
Advocard [28]

Answer:

y=2x-7

Step-by-step explanation:

m==2

y=mx+b

9=16-7

y=2x-7

4 0
3 years ago
Other questions:
  • Two angles are complementary. They have measures of (7x + 2)° and (3x – 2)°, respectively. What is the value of x?
    14·2 answers
  • What is the inverse of the function f(x)=1/4x-12
    5·1 answer
  • Algebra questions^^^^^^
    11·2 answers
  • 26. The first half of a play is 35 minutes longer than the second half of the play. If
    14·1 answer
  • Algebra 1<br><br>I need to know how to do this step by step ​
    6·1 answer
  • table Mia bought a poster that was discounted $5 from an original price of $20. Which equation models how Mia can find the perce
    8·2 answers
  • How do I do this,I can't seem to get the answer
    11·1 answer
  • 6 3/4x5=?<br><br> Please help
    13·1 answer
  • Natilie invested $200 in a savings account that earned 4% simple interest each year. She invested for
    10·1 answer
  • A fireman needs to get water to a second-floor fire. His ladder is 30 ft long and he leans it against the vertical wall so that
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!