tacarter tacarter
  • 02-08-2018
  • Mathematics
contestada

A pair of equations is shown below:

y = 7x − 8
y = 5x − 2

Respuesta :

lublana
lublana lublana
  • 02-08-2018

Given equations are y = 7x − 8 and y = 5x − 2

We can solve them easily using substion.

Plug y = 7x − 8 into y = 5x − 2

7x − 8 = 5x − 2

or 7x − 5x =8 − 2

or 2x = 6

or 2x/2 = 6/2

or x=3

Now plug x=3 into any of given equations say y = 5x − 2

y = 5(3) − 2=15-2=13

Hence (3,13) is the final answer.

Answer Link

Otras preguntas

What is the difference between an expression and an equation? Answer using RAE. Write an expression that represents the following situation: An Uber driver char
30 POINTS!!!!! I NEED IT NOW!!!!!!Find the maximun, minimum,range,medium,mean,mode and the other stuff on the picture if you can if not its ok.
Answer this question pls rq!!
How many ways can 3 different flags be hung in a row if there are 8 flags to choose from?
The value of y varies directly with x. If x = 7, then y = -40. What is the value of x when y = 51?
Which is NOT a perfect square
I am writing an argumentative essay on the Nobel Prize in Literature and if singer songwriters should be awarded this prize. Here is my thesis:Singer-Songwriter
Help me find the missing angle
Janet makes $4.50 an hour for her first hour of work, $7.00 for her second hour, $9.50 for her third hour and so on. How much money will she earn on her 15h hou
List the first 5 multiples of 4. * Your answer​