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Solve these simultaneous equations: y=3x-10; y=2x+5

Method 1 (algebraically):

Since we have "y=" at the start of both equations, we can substitue one into the other to get

3x-10=2x+5

T...

CW
Answered by Catherine W. • Maths tutor
10721 Views

How would I solve y=3x, 2x+y=5 using the substitiution method?

y=3x (1)

2x+y = 5 (2)

Here we are being asked to find what the value of x and y is. It is asking us to substitute either x or y into the equation to help us find our solutio...

SJ
Answered by Samantha J. • Maths tutor
9694 Views

Solve the simultaneous equations y = x + 3, y^2 - x^2 + 3 = -6x

Here, we have two equations involving two variables, x and y. 


The question asks us to 'solve' the set of simultaneous equations.

Equivalently, it is asking us to

AH
Answered by Anthony H. • Maths tutor
9801 Views

Solve the simultaneous equation: 3x+y=-2, -7x+5y=34.

3x+y=-2        ...1)

-7x+5y=34     ...2)

Using the substitution method:

Rearrange equation 1):

y=-3x-2       ...1))

substitute equa...

SJ
Answered by Shaan J. • Maths tutor
8519 Views

If f(x) = 4x - 7 and f(c) = 9, find the value of c.

To find the value of c, we need to find the value of x in the following: 4x - 7 = 9.

Add seven to both sides: 4x = 16

Divide by 4: x = 4

AB
Answered by Andrew B. • Maths tutor
6426 Views

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