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Show that y=3x-2 and 3y-9x+5=0 are parallel.

Parallel lines have the same gradient (same 'm' value in y=mx+c). Therefore m=3 for both equations; if they are parallel lines. The second equation needs to be rearranged for y to determine this. 3y-9x+5 = 0...
NG
Answered by Nicole G. • Maths tutor
15497 Views

Integrate the following fraction w.r.t. x: (sqrt(x^2 + 1)-sqrt(x^2 - 1))/(sqrt(x^4 - 1))

Notice the denominator can be factorised as the difference of two squares. The fraction can then be simplified by cancellation. The resulting fraction(s) can then be solved using the list of integrals in you...
TD
Answered by Tutor80072 D. • Maths tutor
5039 Views

How does not completing a course of antibiotics lead to increased immunity within a population of bacteria?

As you take the antibiotics, it begins to kill bacteria causing infection within your body, however not all bacteria are created equal, and some are more resilient to the antibiotics than others. Naturally, ...
RI
Answered by Rob I. • Biology tutor
3367 Views

Example

Example
LD
4985 Views

Factorise 7x +14

7(x + 2)
AM
Answered by Ajay M. • Maths tutor
8886 Views