A. (0, 0)
B. (-3, 2)
C. (5, -1)
D. (3, -1)
2006-11-10 02:11:04 · 3 answers · asked by caleb m 1 in Education & Reference ➔ Homework Help
You can do this fairly easily by trial and error.
Assuming you mean y > x^2 - 6x + 7, plug in 0, -3, 5, and 3 for x and see if the given value for "y" is indeed greater than what you get.
A. 0^2 - 6(0) + 7 = 7 ... 0 < 7 ... No
B. (-3)^2 - 6(-3) + 7 = 9 + 18 + 7 = 34 ... 2 < 34 ... No
C. 5^2 - 6(5) + 7 = 25 - 30 + 7 = 2 ... -1 < 2 ... No
D. 3^2 - 6(3) + 7 = 9 - 18 + 7 = -2 ... 3 > -2 ... Yes
2006-11-10 03:05:07 · answer #1 · answered by dmb 5 · 0⤊ 0⤋
Slope is upward push over Run. So to illustrate a million/2 might recommend which you initiate at a factor and count quantity UP a million area and good 2 areas. For something like -3/4, you will possibly initiate at a factor and count quantity DOWN 3 areas and good 4 areas. If the slope is an entire quantity assume that there is a a million under it eg. 4 might truthfully be 4/a million. (The denominator consistently is going rightward.) The y-intercept (additionally prevalent as b) is the place the line crosses the y axis. (that's the middle line going up and down on a graph.) once you're given coordinates, they circulate (x,y). So in (-7,8), the -7 is x, and the 8 is y. so the equation may well be. y= -7x + 8 to discover the line you will possibly circulate to a graph, and because -7x is the slope, and that is an entire quantity, you will possibly assume that there is a a million below the -7. So it would be -7/a million. you will possibly discover any random factor on the graph, and count quantity DOWN 7 areas, and to the suitable suited a million area. then you definately regulate that line to bypass the middle line (y- axis) the place b is, which to that end is 8. (x,y) x is the slope, and y is the y-intercept or "b." Perpendicular lines have opposite slopes. (eg. a million/3x + 2 and -a million/3x + 2) Parallel lines have the right comparable slope, yet diverse y intercepts or b. (eg. a million/4x + 2 and a million/4x - 25) it may look long and sophisticated, even with the undeniable fact that it is not.
2016-11-23 14:08:49 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The format of the answers is (x, y).
Plug the values into the comparison and see if it works out.
For example, if you use A., is 0 > 7?
2006-11-10 03:03:09 · answer #3 · answered by Anonymous · 0⤊ 0⤋