[2x+1]=6x-7
2007-10-24 06:57:33 · 2 answers · asked by investing1987 3 in Science & Mathematics ➔ Mathematics
You can set each side of the equation equal to "y", graph each equation, and find the x-coordinate of the point of intersection. If you have to graph it, that is....
2007-10-24 07:00:42 · answer #1 · answered by Barb 4 · 1⤊ 0⤋
You have two lines:
y = 2x + 1
y = 6x - 7
One line has a slope of 2 and a y-intercept of 1, so it will go through the following points:
(0, 1), (1, 3), (2, 5), (3, 7), etc.
The other line has a slope of 6x and a y-intercept of -7, so it will go through the following points:
(0, -7), (1, -1), (2, 5), (3, 11), etc.
From graphing (or looking at the numbers) you'll see that the lines intersect at (2, 5)
x = 2, y = 5 is the solution.
2007-10-24 14:06:10 · answer #2 · answered by Puzzling 7 · 0⤊ 0⤋