Question

Which of the following statements best describes the graph of x + y = 3?

A It is a line joining the points whose x and y-coordinates add up to 3.

B It is a line joining the points whose x and y-coordinates add up to 6.

C It is a line which intersects the x-axis at (3, 3).

D It is a line which intersects the y-axis at (3, 3).

Answer 1

can someone help me please?

Answer 2

Well a line can't intersect either of the x or y-axis at (3,3) so those are wrong

Answer 3

ok

Answer 4

I thought it was b but im not sure

Answer 5

and here x+y=3 this means the coordinates add up to 3

Answer 6

so its a?

Answer 7

Yep, but you understand how I got that right?

Answer 8

could u explain for me please

Answer 9

Yeah, the coordinates of the y intercept is always at (0,n) where n is the y value at which the line crosses the y-axis
And the coordinates of the x-intercept is always at (n,0) where n is the x value at which the line crosses the x-axis
Since (3,3) does not have a 0 as one of them, it is neither an x-intercept nor y-intercept
so C and D are wrong

Answer 10

Now we can find whether it's a or b by looking at the equation
\(\large\ x+y=3\)
here x=the x coordinate and y=the y coordinate,
so the equation is saying that the x coordinate and the y coordinate add together = 3
so it has to be A

Answer 11

oh ok thank you

Answer 12

no problem!

Answer 13

@magbak

Answer 14

what do you think of my pic

Answer 15

I don't see one

Answer 16

look at magbak

Answer 17

You made... another account? lol

Answer 18

yea

Answer 19

@magbak