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Solve by -2x+6=5x-1 graphing

Solve by -2x+6=5x-1 graphing-example-1
User Voho
by
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1 Answer

17 votes
17 votes

Answer:

x=1

Explanation:

Algebraically

1. Move all variables to one side.

-2x+6=5x-1

+2x +2x

6=7x-1

2. Move constants to the opposite side of the variables.

6=7x-1

+1 +1

7=7x

3. Cancel out the coeffients of variables.

7=7x

/7 /7

1=x

Graphically

1. Establish your equations to graph.

-2x+6=5x-1 means y=-2x+6 and y=5x-1

2. Make a table. (I suggest getting some points around the origin like -2, -1, 0, 1, 2 just to get a feel for what directions each graph is going)

x y=-2x+6 y x y=5x-1 y

-2 -2(-2)+6 10 -2 5(-2)-1 -11

-1 -2(-1)+6 8 -1 5(-1)-1 -6

0 -2(0)+6 6 0 5(0)-1 -1

1 -2(1)+6 4 1 5(1)-1 4

2 -2(2)+6 2 2 5(2)-1 9

3. Plot your points and connect them with their respective equation.

4. Find the intersection.

The point at which the lines cross is where the answer for x is. Note in the graph it will be at (1,4) where 1 is the x-value in question.

User Wenxi Zeng
by
3.1k points