Question

solve the given system of equations graphically: y=-x and y=x+2

Answer 1

solve x and y?

Answer 2

i honestly have no idea this came directly from a review sheet.

Answer 3

To solve graphically, means graph each line and see where they intersect.

Answer 4

Ok, you have grid paper to draw?

Answer 5

you can graph by draw on grid paper, and solve x,y to check it correct

Answer 6

Do you want me to solve for x and y?

Answer 7

please

Answer 8

y=-x, you rewrite: y+x=0
y=x+2 , you rewrite: y-x=2

y+x=0
Add : y-x=2
----------------
2x=0
x =0/2
x = 0
subtitution x=0 find y
y =0+2
y =2
(0,2)
you can check by use the grid paper graph 2 line if they intersect at (0,2) then you correct ,if not maybe the graph you draw it wrong or solve eqaution it wrong,I hope it help

Answer 9

sorry I tye wrong my keybroad not work propertly, equation not eqaution

Answer 10

Am I nuts?
y+x=0
y-x=2
--------------add
2y+0=2
therefore
y=1
x=-1

Answer 11

Graphically, y=-x is a -45 degree line that crosses the axes at the origin (0,0)
and y=x+2 is a +45 degree line that crosses the Y axis at 2 (if x=0, y=2)
the two lines will cross at (-1,1)

Answer 12

sorry 2y but I writ 2x alanhuth is right