Answer:
3) A line has one dimension, length. (True)
5) A plane consists of an infinite set of lines. (True)
Step-by-step explanation:
There are 3 undefined terms in geometry.
a) point
b) line
c) plane
From the given options lets check which statements are true and which are false:
1) A point in the form (x, y) has two dimensions (False)
A point has no dimension
2) A plane has a definite beginning and end. (False)
A plane extends infinitely far and has indefinite beginning and end.
3) A line has one dimension, length. (True)
4) A point consists of an infinite set of lines (False)
A line consists of infinite set of points.
5) A plane consists of an infinite set of lines. (True)....
Answer: B
just make the included side equal
The fourth set of ordered pairs is the function.
The definition of a function is that no matter what x value you put in, you get only one y value out. So no x value will have more than one answer. However, in the first 3 choices, you can see that each one has an x value that has two different y value answers.
In grouping 1, x = -1 gives us both y = 1 and y = -1.
In grouping 2, x = 0 gives us both y = 1/2 and y = 3/4.
And in grouping 3, x = -2 gives us both y = 1 and y = 2.
Therefore, the last grouping is your function.
Y - 4x = 7...y = 4x + 7
now sub 4x + 7 in for y in the other equation
2y + 4x = 2
2(4x + 7) + 4x = 2
8x + 14 + 4x = 2
12x = 2 - 14
12x = - 12
x = -1
y - 4x = 7
y - 4(-1) = 7
y + 4 = 7
y = 7 - 4
y = 3
solution is : (-1,3)
