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Mathematics
Heather
8 October, 09:32
Solve.
y=-x-2
y=4x+3
+4
Answers (
1
)
Francis
8 October, 10:37
0
1) Equal the two together (not including the 'y')
-x - 2 = 4x + 3
2) put x together and the whole number together
* when switching sides, signs ( + & - ) changes, watch out for that *
-x - 4x = 3 + 2
-5x = 5 divide by the # with x so you have x
- - - --
-5. - 5
x = - 1
therefore, x = - 1
For y just plug x into either equation
I'll use y = 4x + 3
y = 4 (-1) + 3
y = - 4 + 3
y = - 1
therefore, y = - 1
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