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swat32
3 years ago
8

How do I know if lines are perpendicular

Mathematics
2 answers:
AveGali [126]3 years ago
8 0

You can tell if lines are perpendicular or not by seeing if meet in a right angle. A right angle is like a square, and the lines would have to be 90 degrees.

One example is when the two lines (horizontal and vertical) meet each other at the ends.

(You MUST make sure that they are directly horizontal and vertical. If not, they will either be acute or obtuse).

I hope this helped!

Rainbow [258]3 years ago
6 0

Answer:

When two lines are interested to from a right angel

Step-by-step explanation:

Formula

Y=-2X - 5 so the slope is -2.

Perpendicular have Opposite - reciprocal slopes so the slope of the line you want to find is 1/2

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maw [93]

Answer:

<u>x = 5</u>

Step-by-step explanation:

See attached image.

8 0
2 years ago
Can u help me find the Answer
den301095 [7]

-20x-16

= -4(5x + 4)

I think 4 ×-5 = -20x

4×-4 = -16x

7 0
3 years ago
Can u tell me if my answers are correct here?
MariettaO [177]
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3 0
3 years ago
What is the value of x in the figure shown below?
Pie

The value of X is 35 because the angle 35 measures the same as the angle X, hence their values are the same

5 0
2 years ago
The endpoints of CD are C(–8, 4) and D(6, –6). What are the coordinates of point P on CD such that P is the length of the line s
GalinKa [24]
If you graph the end points C and D then graph the 4 points at the end it is difficult to tell which points are on CD without a line.  
Using the endpoints find the slope (change in y/ change in x) then substitute a point in to find the intercept.  
Slope = (-6-4)/(6- -8) = -5/7
Intercept equation (-6) = -5/7 (6) + b
b = -1.71428571429
Graphing the line shows only 2 points on the line (–2.75, 0.25) and <span>(0.75, –2.25)
I am confused by the part, "</span><span>P is the length of the line segment from D".  Were you given a length P to help you determine which point.  Using the distance formula to find the length from each point to D doesn't help determine which one is best with the information you have given.  The image shows the distances I calculated and the graphed points. 
I hope this helps!</span>

5 0
3 years ago
Read 2 more answers
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