Which two lines are parallel?
1 answer:
Answer:
- 3x + y = -2
- 2y = -6x – 8
Step-by-step explanation:
When the equations are written in the same form, the ratio of x coefficient to y coefficient is the same for parallel lines.
These equations in the same form are ...
- 3x +y = -2
- -6x +2y = 4
- 6x +2y = -8
The first and last of these equations have a ratio of x-coefficient to y-coefficient of ...
(x-coefficient)/(y-coefficient) = 3/1 = 6/2
so the lines are parallel.
The second equation has a ratio that is the opposite of this.
__
<em>Alternate approach</em>
You can put each equation into slope-intercept form (solve for y). The x-coefficient is then the slope of the line. Parallel lines** have equal slopes.
- y = -3x -2 **
- y = 3x +2
- y = -3x -4 **
_____
I find a graphing calculator to be a big help for many problems involving equations and their characteristics.
You might be interested in
Answer:
(C) r=5.2 in
Step-by-step explanation:
firstly, we will draw diagram
we know that
centroid divides altitude into 2:1 form
so, we get
now, we can plug
h=7.794
so, option-C...............Answer
Answer:
B. (2/3) x (2/3) x (2/3)
C. 8/27
D. 2^3 /3^3
Step-by-step explanation:
You need to know the following property
Exponent also means you're multiplying the same number for an 'n' number of times.
For example, 2^3 = 2 * 2 * 2
we multiply it by itself 3 times since 3 is the exponent.
x^y
x is the base, y is the exponent
we read it as x to the power of y
If the exponent is 2, we say it as x squared
If the exponent is 3, we say it as x cubed