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9966 [12]
3 years ago
5

the equation of line cd is y = 3x − 3. write an equation of a line perpendicular to line cd in slope-intercept form that contain

s point (3, 1). y = 3x 0 y = −3x − 8 y = negative 1 over 3x 2 y = − 1 over 3x 0
Mathematics
2 answers:
liberstina [14]3 years ago
4 0

Answer:

The required equation is y=-\frac{1}{3}x+2.

Step-by-step explanation:

The equation of line cd is

y=3x-3

Slope intercept form of a line is

y=mx+b

Where, m is slope and b is y-intercept.

Slope of line cd is 3.

The product of slopes of two perpendicular lines is -1.

m_1\times m_2=-1

3\times m_2=-1

m_2=-\frac{1}{3}

Therefore slope of perpendicular line is -\frac{1}{3}.

Point slope form of a line is

y-y_1=m(x-x_1)

Slope of perpendicular line is -\frac{1}{3} and line passing through the point (3,1).

y-1=-\frac{1}{3}(x-3)

y=-\frac{1}{3}x+1+1

y=-\frac{1}{3}x+2

Therefore the required equation is y=-\frac{1}{3}x+2.

const2013 [10]3 years ago
3 0
Y=3x-3 => slope=m=3
The new line perpendicular has slop = -1/m=-1/3
y=-1/3x+b, b is intercept point (3,1)
=>b=y+1/3x=1+(1/3)3=2
=> y=-1/3x+2
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