jrshadowmasterp6883c
jrshadowmasterp6883c
27-03-2018
History
contestada
y=x
y=2x+9
how do I do it
Respuesta :
tennis456
tennis456
27-03-2018
y=x;
y=
2x+9
Step: Solve y=xfor y:Step: Substitute x for y in
y=
2x+9
:
y=
2x+9
x=
2x+9
x+
−2x
=
2x+9
+
−2x
(Add -2x to both sides)
−x=9
−x−1
=
9−1
(Divide both sides by -1)
x=−9
Step: Substitute −9 for x in
y=x:
y=x
y=
−9
Answer:
x=
−
9
and
y
=
−
9
Answer Link
nilbert
nilbert
27-03-2018
Hi there!
To solve this problem, we need to substitute. Since y = x, then x = 2x + 9.
We can simplify this.
x = 2x + 9
-x = 9
x = -9
And since y=x...
y = -9
Hope this helps!
Answer Link
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