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Solve the equation $7x-y=9$

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Solution

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Final answer to the problem

$y=-9+7x$
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Step-by-step Solution

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  • Solve for x
  • Solve for y
  • Find the derivative
  • Solve by implicit differentiation
  • Solve for y'
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  • Derivative
  • Find the derivative using the definition
  • Solve by quadratic formula (general formula)
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1

We need to isolate the dependent variable $y$, we can do that by simultaneously subtracting $7x$ from both sides of the equation

Learn how to solve two-variable linear equations problems step by step online.

$-y=9-7x$

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Learn how to solve two-variable linear equations problems step by step online. Solve the equation 7x-y=9. We need to isolate the dependent variable y, we can do that by simultaneously subtracting 7x from both sides of the equation. Multiply both sides of the equation by -1. Solve the product -\left(9-7x\right).

Final answer to the problem

$y=-9+7x$

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Function Plot

Plotting: $7x-y-9$

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1
2
3
4
5
6
7
8
9
0
a
b
c
d
f
g
m
n
u
v
w
x
y
z
.
(◻)
+
-
×
◻/◻
/
÷
◻2
◻◻
√◻
√

◻√◻
◻√
∞
e
π
ln
log
log◻
lim
d/dx
D□x
∫
∫◻
|◻|
θ
=
>
<
>=
<=
sin
cos
tan
cot
sec
csc

asin
acos
atan
acot
asec
acsc

sinh
cosh
tanh
coth
sech
csch

asinh
acosh
atanh
acoth
asech
acsch

How to improve your answer:

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Main Topic: Two-variable linear equations

Algebraic equations that have two distinct variables.

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