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19-03-2019
Mathematics

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a line is written in standard form ax+by=c where a does not =0 find the x-coordinate of the point on the line at which y=3

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sqdancefan sqdancefan

19-03-2019

Answer:

x = (c -3b)/a

Step-by-step explanation:

Substitute 3 for y and solve for x.

ax +b·3 = c

ax = c -3b . . . . . . . subtract 3b

x = (c -3b)/a . . . . . divide by the x-coefficient

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