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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. ...

When solving a simultaneous equation, we will use the elimination method. This method sees us removing or ‘eliminating’ the x or y term. First we need to find the lowest common multiple of the x and y ter...

Electricity is conducted by electrons or ions. In order for an ionic compound to conduct electricity, the ions must be able to move freely and carry the charge throughout the solution. A solid ionic compo...

First we need to rearrange our equation so it is in the correct form of ax²+bx+c=0.So we'd move the 3 over to the left hand side to give us 2x2-2x-3=0.We need to use the quadratic formula. Usin...

1. First step is to rearrange to make the quadratic easier to work with: in a familiar form. x² + 4x ≥ 77, -77 from both sides x² + 4x - 77 ≥ 0 Now the quadratic can be solved, ...