http://s97.photobucket.com/albums/l202/massar532/?action=view¤t=jgdggj.jpg
the question is Graph the following equations in the same coordinate plane
y = 2x - 1
y = -x + 2
Then it says: What type of lines are formed?
Compare their slops.
HELP I DON'T GET THAT PART
2007-08-24 09:26:46 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
so do i just write on the one line: -1, 2
?
2007-08-24 09:38:56 · update #1
Your graphs look fine.
Compare the slopes.
y = 2x - 1 has a slope of 2. (It's in y = mx + b form, so the number - m - in front of the x is the slope.)
y = -x + 2 has a slope of -1.
They slope in opposite directions and they intersect, but that's about all you can say about them. They aren't perpendicular to one another because their slopes are not opposite reciprocals of each other.
2007-08-24 09:36:01 · answer #1 · answered by Mathematica 7 · 0⤊ 0⤋
Ifthey are asking what type of lines are formed, you can answer with parallel, perpendicular, intersecting (oblique), or concurrent.
parallel means they never intersect and have the same slope
perpendicular means they intersect at right angles and the slopes are opposite reciprocals (like 3/4 and -4/3)
intersecting or oblique lines intersect but not at right angles
concurrent lines are one right on top of the other-when you graph them, they will look like the same line. These have the same slope and the same y-intercept
The slopes of your two lines are 2 and -1 (you can see the slope by looking at the number in front of x.) These would be intersecting or oblique lines.
2007-08-24 16:38:27 · answer #2 · answered by DLM 5 · 0⤊ 0⤋
The graph is correct.
Linear lines are formed that go on forever.
The slope of the y=2x-1 is 2, and the other one is -1.
That's why one goes up steep, and one goes the other direction, but less of a slope.
2007-08-24 16:37:57 · answer #3 · answered by ichweissallez 2 · 0⤊ 0⤋
Your graphs are correct.
The graphs show a pair of intersecting lines--that is their type. I think you are asked to compare their SLOPES. The first line has slope 2, the second has slope -1.
2007-08-24 16:41:30 · answer #4 · answered by Tony 7 · 0⤊ 0⤋
intersecting lines. One has a negative slope(-1/1) and the other has a positive slope (2/1)
2007-08-24 16:39:38 · answer #5 · answered by Ed S 4 · 0⤊ 0⤋
the slope of the first line is 2, the slope of the second is -1.
The lines are straight lines, neither vertical or horizontal, not perpendicular. One is negative, the other is positive.
They intersect at (1,1)
2007-08-24 16:47:01 · answer #6 · answered by Mugwump 7 · 0⤊ 0⤋
Yup. They form straight lines.
The first has a slope of 2, the other has a slope of -1. Slope is calculated by rise/run.
2007-08-24 16:41:10 · answer #7 · answered by Jonathan B 3 · 0⤊ 0⤋
y = 2x - 1 <-- this is the blue line
y = -x + 2 <-- this is the black line
The types of lines formed are straight lines.
The blue line has a positive slope of 2.
The black line has negative slope of -1.
2007-08-24 16:38:50 · answer #8 · answered by ironduke8159 7 · 0⤊ 0⤋
It is graphed correctly.
But I dont know what the want to hear from the second part.
2007-08-24 16:35:32 · answer #9 · answered by Anonymous · 0⤊ 0⤋