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PLEASE HELP ME !
(2,7); 3x-y =5

User Anthonyeef
by
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1 Answer

7 votes

Answer:

y = 3x + 1

Explanation:

Parallel lines have the same slope:

Given ax + by = c the slope is m = -a/b

**********************************

3x - y = 5

x-intercept is where y = 0

3x = 5

x = 5/3

x-intercept at (5/3, 0)

y-intercept is where x=0

-y = 5

y = -5

y-intercept at (0, -5)

To graph this line just plot the two points and draw the connecting line.

If not comfortable plotting (5/3, 0) just plug in a different value for x

and find the corresponding y value...

If x=1 then 3-y=5 ..., -y = 2 ... y = -2 ...

The point (1, -2) is on the line

**************************************

3x – y = 5 .. m = -3/(-1) = 3

The parallel line will also have slope m = 3

You need equation of the line with slope 3 through (2,7)

Point slope form: y - y1 = m(x-x1)

y - 7 = 3(x-2)

y - 7 = 3x - 6

y = 3x + 1

As above, to find x-intercept set y=0 and solve for x

To find y-intercept set x=0 and solve for y

Then just plot the two points and draw the second line

User Gemmo
by
8.0k points

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