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The point P has coordinates (3, 4) The point Q has coordinates (a, b) A line perpendicular to PQ is given by the equation 3x + 2y = 7 Find an expression for b in terms of a.

Draw a diagramRearrange the given equation into the form y = mx + cy = -3/2x+7/2Gradients of perpendicular lines - m1*m2=-1, so gradient of PQ = 2/3PQ : y=mx+c -> 4=(2/3)*3+cc=2, therefore PQ: y=2/3x+2 b=...
JW
Answered by Jack W. • Maths tutor
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Describe the three types of plate boundary

The three main types are; constructive (divergent), destructive (convergent) and conservative. The most straightforward one is conservative, which is where two plate boundaries slide against each other in op...
LP
Answered by Lauren P. • Geography tutor
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How do I push my answers into the top mark band?

Context is essential to push your marks into the top band. With how I was taught, I made a habit of ensuring you could deduce the question from my answer. For example, if the question was " Evaluate the...
CF
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Explain the course of Hershey-Chase experiment.

In the 50's scientists didn't agree about which molecule - proteins or DNA - carry the hereditary genetic information. This experiment was designed to answer this question. It was known that bacteriophages t...
AP
Answered by Anna P. • Biology tutor
3611 Views

(Section B MML Admissions Written Test) How does the writer persuade us of his point of view? Please give examples from the text to support your answer.

Important points to note when answering: Think about the structure of the text and the main points. Is there a shift in viewpoint with a new paragraph, e.g. presenting a counter-argument? Are the paragraphs ...
NE
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