ivan37 ivan37
  • 02-06-2017
  • Mathematics
contestada

What is the solution to the system of equations x-y=-1 and x-3y = 13

Respuesta :

Osiris7 Osiris7
  • 02-06-2017
Using process of substitution. 

x-y+y=-1+y

x=-1+y

Now substitute into x-3y=13

-1+y-3y=13
-1+1-2y=13+1
-2y=14

y=-7

Therefore, x= -8
Answer Link

Otras preguntas

Prepare an art integrated assignment (Chart tabulation of music, costume, region, language association)
The hypotenuse of a right angled triangle has its ends at the points (1, 3) and (-4, 1). Find the equation of the legs (perpendicular sides) of the triangle.
A line passes through the points ( – 1, – 9) and (1,7). Write its equation in slope-intercept form. Write your answer using integers, proper fractions, and impr
√5 is an irrational number. which of these will also be an irrational number? A. (√5)^2 B. (√5)^-2 C. √5 + √5 D. (5+ √5)(5-√5)
please answer the two questions
À partir d’un exemple, expliquez l’origine de la diversité génétique au sein d’une espèce.
Decide whether the ordered pair (-1,4) is a solution of the equation 8x−2y=3.
The function h is defined by h(x)=3x^(2 )+2. Find h(4x)
What kind of reproduction is budding?
Please answer.. I really need help