Graph orders pairs help please someone help!?

Question

1: When an equation has 2 variables, it is called a/an:
inequality
linear equation
coordinate system


2: How many solutions will an equation line x + y = 6 have?
2 6 an infinite number


3: Why do mathemeticians use the phrase ordered pair?
It is a pair of numbers always listed in the same order: (x, y).
The pair of numbers can be put in any order.
They like to order pairs.


4: Which of these solutions is written as an ordered pair?
{3, 2} (3, 2) 3, 2


5: The rectangular coordinate system consists of 2 number lines which . . .
are parallel, therefore never intersect.
intersect at acute angles.
intersect at right angles.


6: In a rectangular coordinate system, the horizontal line is the . . .
x axis. y axis. origin.


7: In a rectangular coordinate system, the vertical line is the . . .
x axis. y axis. origin.


8: To graph the ordered pair (3, 2), we first move 3 places . . .
upward. to the left. to the right.


9: To continue #8; we then move 2 places . . .
upward. to the left. to the right.


10: To graph the ordered pair (-3, -4), we first move 3 places . . .
downward. to the left. to the right.


11: To continue #10; we then move 4 places . . .
downward. to the left. to the right.


12: In figure 1 above, which point corresponds to the ordered pair (3, 0).
H B F


13: In figure 1 above, which point corresponds to the ordered pair (-1, 4).
G D E


14: In figure 1 above, which ordered pair corresponds to the point A?
(-4, -2) (4, 2) (-4, 2)


15: In figure 1 above, which ordered pair corresponds to the point J?
(-3, 4) (4, -3) (-3, -4)

Answer 1

Normally, even when it is obvious that someone is asking us to do their work for them, I still answer because I believe that the asker could still learn something from it.

In this case, I do not have that feeling.

This is simply a copied list of questions (maybe retyped, which, in this case may be worst), especially questions 12 to 14 which are based on a figure we do not see.

In the time it takes to retype these questions, you could have found all the answers on the web (they are all in wikipedia). I realise that you would have had to understand something about ordered pairs by the time you finish, but then, that was the purpose of the questions, wasn't it.

A Cartesian graph (rectangular coordinate system) is a surface where two directions are set at 90 degrees from each other. Each line that indicates one of the directions is called an axis. The scale is normally marked on each axis.

The graph has an "origin": the intersection of the two axes, where the measure on each axis is zero. The origin is indicated by the ordered pair (0,0).

An ordered pair is simply a pair of numbers written in a determined order.

In a rectangular graph, the horizontal axis (with the scale increasing to the right) is called the x axis. The vertical axis, with the scale increasing upward, is called the y axis.

Is is traditional to write positions as the intersection of the x value and the y value, in that order.

(3,4) means "x value is 3, y value is 4"

To mark off a position (x,y) on the graph, you count off a number of steps corresponding to the first value (x) towards the right (or left if the number is negative); then you go upwards for a number of steps equal to the second number (y), or downwards if the number is negative.

Later, you will need to use graphs that may be different:
a vertical axis where values increase downwards (graphs that involve depth of water, for example),
scales that do not increase with regular steps (for example, logarithms)
axes that do not intersect at 90 degrees (orthogonal projections).

Answer 2

I've gone through advanced university linear algebra courses and multivariable calculus courses and have never, EVER, needed a graphing calculator. In fact, graphing calculators were prohibited during most exams. I would recommend purchasing a GOOD scientific calculator such as the HP-33, putting it in RPN mode (reverse polish notation) and learning how to use it effectively. We don't use graphing calculators in the sciences - that's what MathCAD and Maple are for.

Answer 3

#4 is (3,2)
#8 is 3 to the right
#9 is 2 upward
#10 n # 11 are going 3 to the left and 4 downward
#12-15 i think you have charts but idk