⊕image below!
Which system of equations has a solution of approximately (0.6, –0.8)?
x + 2 y = - 1 and 3 x + y = 1
x - 2 y = 1 and 3 x + y = 1
x -2 y = 1 and 3 x -y = -1
x + 2 y = - 1 and 3 x-y = -1
Answer:
x + 2 y = - 1 and 3 x + y = 1
Step-by-step explanation:
See the graph attached.
From this graph, it is clear that the green line and the Purple line intersect each other at an approximate point (0.6, -0.8).
Now, the green line passes through the x-intercept (-1,0) and y-intercept (0,-0.5).
Therefore, the equation of the green line will be
⇒ x + 2y = - 1
Therefore, the first combination or the fourth combination will be the answer.
Again, the purple line passes through the point (0,1) and has a negative slope.
So, the equation of purple line will be 3x + y = 1 {Since it has negative slope}
Therefore, the first combination will be the answer.
Answer:
x + 2 y = - 1 and 3 x + y = 1
Step-by-step explanation:
Answer
Find out the how many packages will be needed for 28 children if each child gets 4 pencils .
To prove
As given
There are 8 pencils in a package .
Total number of childrens = 28
each child gets 4 pencils
Total number of pencils needed for 28 children = 28 × 4
= 112
Now find out the Number of packages for 28 children .
As
Total number of pencils needed = 112
pencils in a package = 8
put in the above
Number of packages needed for 28 childrens = 14
Therefore the 14packages will be needed for 28 children if each child gets 4 pencils .