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Maths
GCSE

Plot out y= x^2 - x - 2 for values of x from -3 to +3 and label the turning point

x y-3 10-2 4-1 00 -21 -22 03 4
And then be able to plot out these points on a simple graph.
The x-coordinate of the turning ...

TD
Answered by Tutor118205 D. Maths tutor
3729 Views

Solve the simultaneous equations 3x + y = 4 x + y = 2

Rearrange the second equation (or first) in terms of y (or x) y = 2-xthen subsitute into the other equation 3x + (2-x) = 4The solve for x : 2x = 2 x = 1then subsitute that value for x into any equation an...

EM
Answered by Eric M. Maths tutor
4672 Views

Find the roots of the formula x^2 + 4x + 3 by factorising.

x2 + 4x + 3 is a quadratic equation. We're looking for a pair of numbers that add to make 4, and multiply together to make 3. Students should be encouraged to try options (e.g. 2 and 2).
T...

JB
Answered by Joseph B. Maths tutor
3560 Views

How do I find the equation of a line between two points?

The equation of a line is written in the form y=mx+c where m is the gradient of the line and c is the y-intercept. These are the two values that we will need to calculate.For example, lets take the two p...

LR
Answered by Lucille R. Maths tutor
4008 Views

Solve the simultaneous equations 3x + 2y = 4, 4x + 5y = 17

To solve this pair of simultaneous equation I will use the substitution method however the elimination method could also be used here.
Eq1. 3x + 2y = 4
Eq2. 4x + 5y = 17
First rearrange Eq1...

GH
Answered by George H. Maths tutor
5805 Views

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