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Line AB has the equation 3x + 5y = 7. Find the gradient of Line AB.

Rearrange equation into the form: y = mx + c

m = gradient

3x + 5y = 7

5y = -3x + 7

y = (-3/5)x + (7/5)

gradient = (-3/5)

AN
Answered by Aaquib N. Maths tutor
12920 Views

Solve the simultaneous equation: 2x + 3y = 6, 3x + 2y = 5.

1) 2x + 3y = 6

2) 3x + 2y = 5

We can either use substitution or elimination.

Using elimination:

Multiply equation 1) by 3 and multiply equation 2...

AN
Answered by Aaquib N. Maths tutor
17817 Views

Solve the simultaneous equation: 3x+2y=8, 2x+5y=-2?

6x+4y=16, 6x+15y=-6

11y=-22

y=-2

3x=8+4=12  x=4

x=4, y=-2

TE
Answered by Thomas E. Maths tutor
14641 Views

Find the equation of the tangent to the curve y = 2 ln(2e - x) at the point on the curve where x = e.

The first step is to find the y coordinate at the point on the curve where x = e. To do this we subsitute x = e into the equation of the curve, so y = 2ln(2e - x) becomes y = 2ln(2e - e). Simplifying t...

RT
Answered by Rhiannon T. Maths tutor
10483 Views

Solve x^2 - 6x - 2=0 giving your answer in simplified surd form.

SInce the question requires simplified surd form, it makes sense to use the quadratic formula immediately for this question.

This would give us

x = 6 [+-] squareroot(36-(4x1...

MB
Answered by Molly B. Maths tutor
13420 Views

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