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mr Goodwill [35]
3 years ago
14

S2 Summer Holiday Homework

Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
6 0

 

I. xy + 2y=3       Not linear equation because is grade 2 equation  (xy).

II. x-2y = y              Are linear equations in two unknowns  (x and y).

III. 3x + 2y = 5      Are linear equations in two unknowns  (x and y).

<h2>Corect ansver:    C)  II and III only</h2><h2></h2>

.

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Answer:

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Step-by-step explanation:

To figure out if any of the lines are parallel or perpendicular to each other, you have to find the slopes of each line. To find the slope look at the graph find the rise over run for all of the lines:

line a: This line goes down one every time it goes over 3, which can be represented by -1/3

line b: This lines goes down one every time it goes over 3, which can also be written as -1/3

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When two lines are parallel, they have the same slope. Line a and line b have the same slope, so they are parallel.

When two lines are perpendicular, their slopes are negative reciprocals of each other. Since none of the slopes are a negative reciprocal of another slope, we have no perpendicular lines.

Hope this helps :)

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