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The straight line L1 passes through the points (–1, 3) and (11, 12). Find an equation for L1 in the form ax + by + c = 0, where a, b and c are integers

When finding the equation of a straight line there are two important figures to calculate. The first being the gradient (the slope of the line) and the second being the y intercept (where the line crosses th...
RB
Answered by Ruby B. • Maths tutor
20407 Views

Expand and simplify (-2x+3)(x-6)

(-2x+3)(x-6)= -2x^2+12x+3x-18= -2x^2+15x-18
BC
Answered by Beth C. • Maths tutor
5385 Views

Increase £190 by 25%

There are two ways to work out the answer to this question. The first way involves first working out 25% of £190 and then adding this to your original £190. To calculate 25% of £190 we multiply 190 by 0.25 a...
JF
Answered by Juliet F. • Maths tutor
8365 Views

Use Simpson's rule with 5 ordinates (4 strips) to find an approximation to "integral between 1 and 3 of" 1/sqrt(1+x^3) dx giving your answer to three significant figures.

Just as a note before I start, some of the symbols I use here will be horribly confused, this won't be an issue with a whiteboard but doing maths in a text editor is not great so I've had to make do. Taking ...
DA
Answered by Dominic A. • Maths tutor
10433 Views

How do I solve these two equations simultaneously: 7x+y=1 and 2x^2 - y = 3

These types of questions can sometimes throw people off due to the quadratic nature of the second equation but don't fret; we'll use a method called substitution to find the answer! Firstly, we rearrange the...
ZS
Answered by Zacchaeus S. • Maths tutor
3420 Views