hcerda122 hcerda122
  • 24-11-2020
  • Mathematics
contestada

solve the system of linear equations by substitution.
x + 4y = 6
x - y = 1

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 24-11-2020

9514 1404 393

Answer:

  (x, y) = (2, 1)

Step-by-step explanation:

Use the second equation to write an expression for x:

  x = 1 +y

Substitute that into the first equation:

  (1 +y) +4y = 6

  5y = 5 . . . . . . . . subtract 1, collect terms

  y = 1 . . . . . . . divide by 5

  x = 1 +1 = 2 . . . use the expression for x to find x from y

The solution is (x, y) = (2, 1).

Answer Link

Otras preguntas

What was the relationship between trade and the spread of phoenician alphabet?
what letter comes next 1I2L3F4
Which answer corrects the error in capitalization? In the month of February, Washington's birthday is an official federal holiday. A. Federal B. february C.
how are the GCf and the LCM alike and different
round 90.69 to the nearest tenth
as americans we celebrate our unity and also celebrate our diversity. why are they both strengths of our country?
6000 as a whole number multiplied by a power of 10
john measured 2 cups of flour into bowl on the counter.then he spilled part of it, and now there is only 3/8 cups left. how much did he spill
On Earth's surface, the weight of an object equals the product of its mass and _____. v, the speed of the object G, the constant of universal gravitation g,
what does a variable allow you to do that you couldn't do before