Andy wants to buy 20 candy bars. If there is a special sale for buy 2 candy bars get one free. How much will it cost to buy 20 b
2 answers:
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Answer:
Perpendicular
Step-by-step explanation:
Given points P=(2,6) and Q=(4,5)
The line RS is y=2x-3.
Now we know that the line joining any two points (x1,y1) and (x2,y2) has slope m=
Now the slope of the line PQ is
m1== -
We know that the slope of the line in the form y=mx+c is m
So the line RS has slope m2=2
Now two lines are parallel if m1=m2
And those two lines are perpendicular if
here m1= - and m2=2
clearly
Therefore the two given lines are perpendicular
The slope of the line is
.
The line perpendicular to the above line has slope
Its equation is . Since this line passes through,
,
Thus the equation of the line in slope intercept form is
The point-slope form:
We have the points (2, 2) and (0, -4). Substitute:
The standard form:
<em>use distributive property</em>
<em>add 6 to both sides</em>
<em>subtract y from both sides</em>
