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
Wittaler [7]
3 years ago
6

What is the solution to the pair of equations? y = 7x − 9 y = 3x − 1

Mathematics
2 answers:
kicyunya [14]3 years ago
7 0

Step-by-step explanation:

substitution:

7x-9= 3x-1

4x= 8

x=2

sergij07 [2.7K]3 years ago
3 0

Answer: x = 2

Concept:

There are three general ways to solve systems of equations:

  1. Elimination: Eliminating a variable by addition or subtraction when all equations have the variable.
  2. Substitution: Combining two equations when one variable is isolated into one side.
  3. Graphing: Find the intersection point of equations to get the solution.

Here, we are going to use the method of <u>substitution </u>because [y] is isolated onto the left-hand side.

Solve:

<u>Given information</u>

y = 7x - 9

y = 3x - 1

<u>Combine both equations by substitution</u>

7x - 9 = 3x - 1

<u>Subtract 3x on both sides</u>

7x - 9 - 3x = 3x - 1 - 3x

4x - 9 = -1

<u>Add 9 on both sides</u>

4x - 9 + 9 = -1 + 9

4x = 8

<u>Divide 4 on both sides</u>

4x / 4 = 8 / 4

\boxed{x=2}

Hope this helps!! :)

Please let me know if you have any questions

You might be interested in
Please help me with this math problem, urgent please
cestrela7 [59]

Answer:

y = -3.5x + 15

Step-by-step explanation:

Your slope-intercept equation is always y = mx + b

Using this formula, we need to find slope first: m = (y2-y1) / (x2-x1)

Step 1: Find slope

m = (1-8) / (4-2)

m = -7/2

Step 2: Plug in into slope-intercept form

y = -3.5x + b

Step 3: Find <em>b </em>(Plug in a coordinate given)

1 = -3.5(4) + b

1 = -14 + b

b = 15

Step 4: Combine it all together

y = -3.5x + 15

And you have your final answer.

3 0
3 years ago
6. Write an equation of a line parallel to y = 3x + 9 and goes through the point (-1,5).
lisabon 2012 [21]

Answer: The equation parallel to the line is y=3x+8

Step-by-step explanation: Parallel lines have the same gradients, wr have a gradient for the above line which 3. The standard formula for the linear equation is y=mx+c

We have to calculate c since we have x and y.

y=mx+c

5= 3(-1)+c

c=8

The equation become y=3x+8

4 0
3 years ago
Someone knows what number multiplied twice by the same can give me results 203!!!!!
sineoko [7]

Answer:

i will help you.......

5 0
2 years ago
Y=x+2 y=-3X <br><br>solve system of equations algebraically <br>​
goblinko [34]

Answer:

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

Step-by-step explanation:

Let y = x +2 ----- (1)

y = -3x ------ (2)

Put equal both sides x +2 = -3x

x = -3x -2

x +3x = -2

4x = -2

x = -1/2 Put it in 2nd equation

Y = -3 (-1/2)

y = 3/2

so (x,y) = -1/2 , 3/2

Hope you got it.

Please Mark as Brainliest.

8 0
2 years ago
I’m stupid someone helpppp
Kipish [7]

Answer:

I think it is C

Step-by-step explanation:

let me know if I am wrong

4 0
3 years ago
Other questions:
  • 26. Leonard used 2/7 of his paycheck to pay
    10·1 answer
  • Math help? please.......
    11·1 answer
  • Mark made a scale drawing of a soccer field, using a scale of .5 cm=1m. The actual length of the field is 110 m. What is the len
    6·2 answers
  • Suppose that weekly income of migrant workers doing agricultural labor in Florida has a distribution with a mean of $520 and a s
    11·1 answer
  • 1/2 of 1% of 190 tons?
    7·2 answers
  • A submarine dives at an angle of 13 degrees to the surface of the water. The submarine travels at a speed of 760 feet per minute
    12·1 answer
  • Emilie brought a water bottle for two dollars. She also bought some candy bars for three dollars each. Emilie did not spend more
    13·1 answer
  • The sum of j and 47 is 55.<br> Solve for j.
    7·2 answers
  • PLEASE HELP I WILL GIVE BRAINLIEST IF 2 PEOPLE ANSWER! Find the area of a square with side length x when x is equal to the given
    14·1 answer
  • Find 45% of 50 I’m unsure and I need help
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!