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
Kisachek [45]
2 years ago
12

Solve y=-x+2 and y=-2x-1 as a graph, substitution, or elimination?

Mathematics
1 answer:
kotegsom [21]2 years ago
8 0

Answer:

(- 3, 5 )

Step-by-step explanation:

Given the 2 equations

y = - x + 2 → (1)

y = - 2x - 1 → (2)

Using substitution method.

Substitute y = - x + 2 into (2)

- x + 2 = - 2x - 1 ( add 2x to both sides )

x + 2 = - 1 ( subtract 2 from both sides )

x = - 3

Substitute x = - 3 into (1)

y = - (- 3) + 2 = 3 + 2 = 5

Solution is (- 3, 5 )

You might be interested in
Jordan and Ellen recycle cans. Jordan recycles 7 cans for every 12 cans Ellen recycles. Last week, Jordan
Natasha2012 [34]

Answer:

c=6 They sold a total of 114 cans

Step-by-step explanation: The ratio is 7:12, so last week, he sold 42 cans, meaning that you need to divide 42 by to get 6 in order to figure out the amount Ellen sold last week. Then do 6 times 12 to get 72 cans sold for Ellen. Add 72 to 42 to get 114 cans sold in total.

5 0
2 years ago
Read 2 more answers
603.8<br> 275.4<br> -_____<br><br> What’s that? But can you put the steps??
Aleksandr-060686 [28]

Answer:

328.4

Step-by-step explanation:

sorry I don't know the step by step

4 0
3 years ago
Bristol is analyzing positive daily customer feedback on different restaurants to find the perfect place to invest. she would li
sukhopar [10]
Burrito Bros :) Hope this helped.
8 0
2 years ago
Read 2 more answers
HELP ME PLEASE!!! I AM GIVING BRAINLIEST TO WHO CAN SOLVE IT CORRECT
yaroslaw [1]

Answer:

x^2 +4x+4 = 4

Step-by-step explanation:

To complete the square  take the coefficient of the x term

4

Divide by 2

4/2 =2

Square it

2^2 =4

Add it to both sides of the equation

x^2 +4x+4 = 4

7 0
2 years ago
I need help bruv. For the function y=x^2 - 5x - 6 .
lara [203]

Answer:

a. Vertex = (2.5,-12.25)

b. y-intercept = (0,-6)

c. x-intercept = (6,0) ; (-1,0)

Step-by-step explanation:

a.

Your equation is written as:

y = ax^{2} + bx +c

The easiest way to find the vertex is writing the equation this way:

y = a(x-h)^{2}+k

Being the vertex (h,k)

So first complete the square

y = x^{2} -5x -6 \\y = x^{2} - 2(2.5x) -6 \\y = x^{2} - 2(2.5x) +2.5^{2} - 2.5^{2} -6 \\y = (x^{2} -2(2.5x) + 2.5^{2}) -6.25 - 6 \\y = (x-2.5)^{2} -12.25

Vertex : (2.5,-12.25)

b.

To find the y-intercept you need to replace the equation when x = 0 and get y

y = (0)^{2} - 5(0) -6\\y = - 6

c.

To find the x-intercept you need to replace the equation when y = 0 and get x

0 = x^{2} - 5x -6 \\0 = (x-6)(x+1)\\x = 6\\x = -1

4 0
3 years ago
Other questions:
  • Joe borrowed $2,000 from the bank at a rate of 7% simple interest per year. How much interest did he pay in 5 years?
    10·1 answer
  • What is the slope of the line? (2,4) and (0,-1)
    6·1 answer
  • 1. Solve: 2a - b = ac + for a
    11·1 answer
  • When you use the distance formula, you are building a(n) _____ whose hypotenuse connects two given points.
    13·2 answers
  • Two consecutive numbers whose squares differ by 25
    9·1 answer
  • What is the volume of this solid? A triangular prism. The triangular base has a base of 10 inches and height of 7 inches. The he
    13·2 answers
  • HELP!!! Brainly for the correct answer.
    5·1 answer
  • Can somebody help me make a word problem of a inequality equation pls
    5·1 answer
  • Given the function
    15·1 answer
  • Can you guys solve this
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!