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Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "equals" etc. Also use ^ to indicate powers (eg x-squared = x^2).

However, let's answer for the two lines with equations y = 8x - 10 and y - 4x = 20.

Let's use the substitution method.

Substitute y with 8x - 10 to the second equation.

8x - 10 - 4x = 20

4x = 30

x = 30/4= 15/2 (the x-coordinate of the intersection point)

y = 8x - 10 replace 15/2 for x

y = 8(15/2) - 10 = 50 (the y-coordinate of the intersection point)

So the two lines intersect at (15/2, 50).

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