Nemisis Nemisis
  • 16-08-2016
  • Mathematics
contestada

Use a graph and a table to solve the system. Check your answer.

{y−x=5
{3x+y=1

(4, -1)
(1, -4)
(-1, 4)
(-4, 1)

Respuesta :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 29-08-2016
y - x = 5 . . . (1)
3x + y = 1 . . . (2)

From (1), y = 5 + x . . . (3)
Putting (3) into (2), gives
3x + 5 + x = 1
4x = 1 - 5 = -4
x = -4/4 = -1

From (3), y = 5 + (-1) = 5 - 1 = 4

Therefore, solution is (-1, 4)
Answer Link

Otras preguntas

Which of the following was an end result of Imperialism in Africa? a. Deteriorated health care c. Deteriorated economies for colonists b. Deteriorated transport
PLEASE HELP ASAP What is the slope of this graph?
i think it is A but I'm not sure..
Meter is the SI base unit for measuring?? A.) length B.) time C.) mass D.) volume
can anyone solve these? Thanks.
Simplify 24/60 answer this plz
The teacher passed out math books. The length is 10 inches and the width is 8 inches. What is the perimeter of each book?
Qué relación hay entre la satisfacción de las necesidades fundamentales del ser humano y el Buen Vivir
What sin does Dante accuse pope Nicholas III of? A. Wrath B. Heresy C. Simony D. Betrayal
Which method of protesting taxes do you think was most successful for colonists and why?