Question

3. Write the equation of the line that passes through the point (-3, 4) and is perpendicular to the

Answer 1

Answer:

We must must transform the standard form equation 3x+6y=5 into a slope-intercept form equation (y=mx+b) to find its slope.

3x+6y=5 (Subtract 3x on both sides.)

6y=−3x+5 (Divide both sides by 6.)

y=−  

6

3

​  

x+  

6

5

​  

 

y=−  

2

1

​  

x+  

6

5

​  

 

The slope of our first line is equal to −  

2

1

​  

 . Perpendicular lines have negative reciprocal slopes, so if the slope of one is x, the slope of the other is −  

x

1

​  

 .

The negative reciprocal of −  

2

1

​  

  is equal to 2, therefore 2 is the slope of our line.

Since the equation of line passing through the point (1,3), therefore substitute the given point in the equation y=2x+b:

3=(2×1)+b

3=2+b

b=3−2=1

Substitute this value for b in the equation y=2x+b:

y=2x+1  

Hence, the equation of the line is y=2x+1.

Step-by-step explanation: