Solve by graphing?

Question

2x - y = 6

y= -1/4x + 3

Answer 1

#1: 2x - y = 6
#2: y= -1/4x + 3

Graph both equations on the same graph. Where they intersect is the solution.

You should find they intersect at (4, 2).

Answer 2

1. set up both equations in the format of y=mx+b
2. the first equation then is y=2x-6
the second equation is already in this format.
3. b is your y intercept (where the line crossed the y axis)
4. m is your slope.
5. graph each line and where the two lines intersect
is the solution.

Answer 3

isolate y in in equation 2x - y = 6

2x - y = 6

Transpose 2x

2x - y = - 2x = - 2x + 6

- y = - 2x + 6

Multiply the equation by - 1

- 1(- y) = - 1(- 2x) + (- 1)(6)

- (- y ) = - ( - 2x) + ( - 6)

y = 2x - 6

Insert the x value and solve for y

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Y = - 1/4x + 3

insert the x value and solve for y

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