The answer:
x = 1
Explanation:
If the line is parallel to the y-axis it has no slope, so you would only write down the x-intercept.
Answer:
Correct answer:
$20.40
Step-by-step explanation:
20% off means that the new price of the skirt will be 80% of the original price:
$30(100% – 20%) = $30(80%)
Converting the percent to a decimal gives:
$30(0.8) = $24.00
There is an additional 15% off the sale price of $24.00, so the final price is 85% of the sale price:
$24(100% – 15%) = $24(85%)
Again converting the percent to a decimal gives:
$24(0.85) = $20.40
from first equation x = 7 + 2y. Substitute this into second equation:-
2(7 + 2y) + 5y = 5
9y = -14 + 5 = -9
y = -1
Plug this into the first equayion
x - 2(-1) = 7
x = 5
Answer is x = 5, y = -1 .
Answer:
The slope is 2
Step-by-step explanation:
The slope of a line passing through two points is given by:
![m=\frac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=m%3D%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
which is the difference between the y-coordinates of two points divided by the difference between x-coordinates of two points
We are given:
Difference between x-coordinates = 3
Difference between y-coordinates = 6
So,
![m = \frac{6}{3}\\=2](https://tex.z-dn.net/?f=m%20%3D%20%5Cfrac%7B6%7D%7B3%7D%5C%5C%3D2)
The slope of the line that passes through these points is 2 ..
if four points are collinear, that are also coplanar: This is true
If points lie in the same line. they must lie in the same plane