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Maths
GCSE

How do I find the x-intercept or the y-intercept?

The x-intercepts are where the graph crosses the x-axis
To find the x-intercepts of an equation --> substitute in y = 0 and solve for x

The y-intercepts are where the graph crosses the y-a...

Answered by Sundeep U. Maths tutor
5217 Views

Given that y r 1 2 x , complete this table of values. x 1 2 5 10 y 1

y=k/x2

yx2=k  

1*102=k

k=100

x=1 y=100

x=2 y=25

x=5 y=4

x=10 y=1

Answered by Savannah H. Maths tutor
6168 Views

write 2/(3+root(5)) in the form a + b*root(5), where a and b are rational numbers.

You would first multiply the expression by (3-root(5))/(3-root(5) - which equals 1 - to get (6-2root(5))/14 which then equals 3/7 - (1/7)*root(5) and you are done.

Answered by Max G. Maths tutor
4471 Views

Solve the simultaneous equations: 3x+2y = 11, 2x-5y=20

Firstly, solving simultaneous equations finds the point(s) where two lines on a graph meet. They can either be two linear equations (finding one point of intersection), a linear and a quadratic (can have ...

Answered by Olivia C. Maths tutor
9660 Views

A particle is moving along a straight line. The fixed point O lies on this line. The displacement of the particle from O at time t seconds is s metres where s = 2t3 – 12t2 + 7t(a) Find an expression for the velocity, v m/s, of the particle at time t.

To find velocity you differentiate displacement with respect to time

Therefore ds/dt = v = (3x2)t2-(12x2)t2+7

Implying v = 6t2-24t+7

Answered by Thomas O. Maths tutor
22806 Views

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