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How do you work out the gradient of a straight line?

Look at the graph for two points that you can read the x and y values for easily. Then draw a triangle using these two points and use a ruler to draw a dotted line or just to help you read the x and y values...
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Answered by Connor L. • Maths tutor
3911 Views

Solve the simultaneous equations: 3x + 4y = 5 and 2x – 3y = 9

To solve a simultaneous equation we use a method known as elimination. We choose to 'eliminate' or remove the X or Y term. To 'eliminate' x we must firstly determine the lowest common multiple 3 and 2 (as th...
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Answered by Prasanna G. • Maths tutor
6415 Views

Factorise the following equation: y = 2x^2 + 4x - 6

For this question, it is best to first take out a factor of 2 from the equation. This will leave you with y=2(x 2 +2x-3). We then need to work out the two numbers that will multiply to -3 and add to 2. We ca...
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Answered by Stephen C. • Maths tutor
4951 Views

Give the value of 15^0.

15 0 = 1 Anything to the power of 0 is always 1. See the examples below: 10 0 = 1; 25 0 = 1; 50 0 = 1.
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Answered by Ellie P. • Maths tutor
11476 Views

Solve simultaneously 2x-y=2, 3x+2y=17 to calculate values of x and y.

This problem can be solved through substitution. The first equation provided in the question should be rearranged to give y=2x-2. This equation for y can be directly substituted into the second equation. Thi...
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Answered by Wasif R. • Maths tutor
6506 Views