x+2y=8

Ilnaus5 2022-09-20 Answered
x+2y=8
You can still ask an expert for help

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

Solve your problem for the price of one coffee

  • Available 24/7
  • Math expert for every subject
  • Pay only if we can solve it
Ask Question

Answers (1)

panterafan101wx
Answered 2022-09-21 Author has 6 answers
x+2y=8
subtract both sides by x
2y=8−x
divide both sides by 2
y = 4 - 1 2 x
The solution is line

We have step-by-step solutions for your answer!

Expert Community at Your Service

  • Live experts 24/7
  • Questions are typically answered in as fast as 30 minutes
  • Personalized clear answers
Learn more

You might be interested in

asked 2021-06-01

Find the linear approximation of the function f(x)=4x at a=0
Use L(x) to approximate the numbers 3.9 and 3.99 Round to four decimal places

asked 2021-08-11
Determine the equation of the line in slope-intercept form which passes through the point (6. 6) and has the slope 13. Simplify the answer, please.
asked 2022-09-25
Need to write the equation in slope intercept form given (-5,0) and (3,3)
asked 2022-09-04
Find the slope of a line perpendicular to x−y=16
asked 2022-02-25
All solution of AX=0 where A is a n×n matrix and X is a column vector form a subspace of Rn. All the subspaces of Rn are of this type. How to prove this result?
asked 2022-02-22
Usually linear regression involves two variables (x,y), i.e. an independent variable x and a dependent variable y, and they are related by the following expression
y=a0+a1x
where a0 and a1 are parameters that define the linear model. In linear regression we have one equation of this form for each couple of observed variables (xi,yi), thus we have a linear system and its solution gives us a0 and a1.
Let's consider that we have two set of independent-dependent variables, namely (x,y) and (w,z). The first two variables (x,y) are related by the previous equation, while the second two variables (w,z) are related by the following
z=b0+b1w
where b0 and b1 are parameters that define the linear relation between z and w. Also in this case a set of observation (wj,zj) leads to a linear system and its solution gives us b0 and b1.
In general, if a0,a1 and b1 are independent, then we can solve the two linear systems separately. But now, let's suppose that a0 and b0 are independent, while a1=b1. In this case, the two linear systems should be solved simultaneously.
I've solved this problem just definying one linear system of equation involving both the two sets of equations, but I would like to know if this problem has a specific name and how to correctly approach it. In particular, I want to know how to assessing the fit quality (for example, with an equivalent of the R2).
asked 2022-06-03
I am having difficulty with true/false statements and their justifications regarding systems of linear equations.
(a) A linear system of three equations in five unknowns is always consistent (i.e. it has at least one solution)
(b) A linear system of five equations in three unknowns cannot be consistent
(c) If a linear system in echelon form is triangular then the system has the unique solution
(d) If a linear system of n equations in n unknowns has two equations that are multiples of one another, then the system is inconsistent.
So far, for (a) I have said False, as it will always be consistent if it is homogeneous, but not if it is non-homogeneous.
For (b) I have said false, but am having difficulty justifying this assertion
c) I know to be true.
(d) I believe may be false as having equations that are multiples could result in free variables and hence infinite solutions?
I am rather unsure on what I have done so far.
Any assistance is greatly appreciated.