Is the line through points P(2,-9) and Q(6, -13) perpendicular to the line through points R(5,-1) and
1 answer:
Two lines
are perpendicular if their slopes are in a relation
.
So we need to find slopes and if the above relation holds then we can claim the lines are perpendicular.
To find slopes, use slope formula

The first slope of a line passing through
is

The second slope of a line passing through
is

Now check if
is true

This means the two lines <em>are</em> perpendicular.
Hope this helps.
You might be interested in
Answer:
x=-11
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>Given system of linear equations:</u>
<u>Add up the equations to eliminate y:</u>
- x + 2x = 90 + 105
- 3x = 195
- x = 65
<u>Find y:</u>
- y + 65 = 90
- y = 90 - 65
- y = 25
The <em><u>correct answer</u></em> is:
22.5° F.
Explanation:
The temperature increases 1.5° per hour. From 5:00 AM to 12:00 PM is 12-5 = 7 hours. This makes an increase of 1.5(7) = 10.5°.
The temperature started at 12°F; increasing by 10.5° gives us
12+10.5 = 22.5°F.
The answer to 47/40 as a percentage is 94%
Answer:
1000
Step-by-step explanation: