Question

Solving Systems of Equations Approximately?

Answer 1

Question?

Answer 2

yes

Answer 3

What's the question?

Answer 4

why not exactly ?

Answer 5

the question what is?

Answer 6

Which of the following statements best describes the graph of x + y = 2? (4 points)

It is a line which intersects the x axis at (2, 2).

It is a line which intersects the y axis at (2, 2).

It is a line joining the points whose x and y coordinates add up to 2.

It is a line joining the points whose x and y coordinates add up to 4.

Answer 7

you can exclude some statements just by reading them, without the question.

Answer 8

Does the x-axis have the point (2,2) on it?

Answer 9

Does the y-axis have the point (2,2) on it?

Answer 10

now, choose between C and D

Answer 11

so which one is it?

Answer 12

which one is it? good question, but I would like to have you answer it:)


I will help you however.

x + y = 2
So any thing you choose to plug in for x, it will be a must that y will make that number add to 2, so that the statement is true.

For example, if I choose x=-1
x + y = 2
(-1) + y = 2
(-1) + y + 1 = 2 + 1
y = 3

so the point is (-1,3)
and as we see
(-1) + (3) = 2

and so will be true for any "a"
if you choose x=a
x + y = 2
(a) + y = 2
(a) + y - (a) = 2 - (a)
y = 2 - a

So your point is (a , 2-a)
And again, if you add the coordinates of the point,
x + y = 2
(a) + (2-a) = 2
a + 2 - a = 2
2 = 2

So for any x-coordinate we choose to find y, the x-y coordinates of the points will have a sum of?