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Solve: 4(3x − 2) = 2x - 5

The question is asking us to find the value of x. First, we need to multiply the brackets out. To do this, multiply everything in the bracket by 4 so 4 3x=12x and 4 -2=-8 this gives the equation 12x - 8 = 2x...
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Answered by Ellecia S. • Maths tutor
15146 Views

The equation kx^2 + 4x + (5 – k) = 0, where k is a constant, has 2 different real solutions for x. Show that k satisfies k^2-5k+4>0.

This questions is a proof type question, which means that you need to get to a specific formula. Usually, these questions give you clues in order to prove it. In this case it tells you that the equation has ...
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Answered by Alin G. • Maths tutor
17418 Views

Find an equation for the straight line AB , giving your answer in the form px+qy=r, where p, q and r are integers. Given that A has co-ordinates (-2,4) and B has co-ordinates (8,-6)

We know 2 equations for a straight line; Y=MX+C and Y-B=M(X-A) . Since we do not have the y intercept (C) or any means of finding it but we do have 2 points on the straight line, it would make sense to use t...
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Answered by Samantha C. • Maths tutor
4699 Views

Find the equation of the straight line passing trough the points (-2,1 ) and (1, 4).

Firstly you need to understand the question. It asks for the equation of a straight line, which is linear, thus of the form y = mx+c. Now, knowing that the equation is of that form we firstly need to find th...
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Answered by Alin G. • Maths tutor
3024 Views

how do you know when to use a direct or an indirect object pronoun?

Direct object pronouns: me, te, le, la, nous, vous, les me, you, him, her, us, you (pl), themIndirect object pronouns: me, te, lui, nous, vous, leur to me, to you, to him/her, to us, to you (pl), to themObje...
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Answered by Lauren S. • French tutor
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