12/14 A1 Lesson

12/14 A1 Lesson

Please take out your homework

Please take out your notes

And before I forget... DeltaMath for homework tonight

Rewrite into standard form

 $y-3=\frac{2}{3}\left(x-9\right)$  

Advance to the next slide only when finished

 $y-3=\frac{2}{3}\left(x-9\right)$  

 $y-3=\frac{2}{3}x-6$  
 $y=\frac{2}{3}x-3$  

Advance to the next slide

 $-\frac{2}{3}x+y=-3$  

multiply both sides by -3

 $2x-3y=9$  

Rewrite in standard form

 $y+1=-\frac{7}{8}\left(x-8\right)$ 

Slope Intercept form
 $y=-\frac{7}{8}x$  

Standard form
 $\frac{7}{8}x+y=0$  

 $7x+8y=0$  

Multiple Choice

What is a parallel slope to the line whose equation is

 $y=-\frac{3}{4}x+9$  

• -3/4

• 4/3

• -4/3

• 3/4

Multiple Choice

What is the perpendicular slope to the line whose equation is

 $y=\frac{5}{6}x-8$  

• 5/6

• -6/5

• 6/5

• -5/6

Multiple Choice

What is the perpendicular slope to the line passing through the points (0, 5) and (2, 3)?

• 1/2

• -2

• -1

• 1

Multiple Choice

What is the perpendicular slope to the line whose equation is

y - 8 = 3(x - 7)

• 3

• -3

• 1/3

• -1/3

Multiple Choice

What is the slope of a line parallel to the line whose equation is

y = (2/3)x +17

• 17

• -1/17

• 2/3

• -3/2

Multiple Choice

What is the slope of a line perpendicular to the line whose equation is

5x - 4y = 8

• -4/5

• 5/4

• -5/4

• 4/5

Multiple Select

Select all lines parallel to

 $3x-2y=7$  

•  $y=\frac{2}{3}x+10$  

•  $y=\frac{3}{2}x-5$  

•  $3x-2y=9$  

•  $y-2=\frac{3}{2}\left(x-20\right)$  

Multiple Select

Select all lines parallel to

 $y=\frac{1}{4}x$  

•  $-\frac{1}{4}x+y=3$  

•  $y=9+\frac{1}{4}x$  

•  $x-4y=6$  

•  $x+3=4y$  

Multiple Choice

y = (1/2)x + 7 and 2x + y = -5

Are the equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

Multiple Choice

y = 3x + 11 and y = (1/3)x - 3

Are the equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

Multiple Choice

3x + 2y = 6 and 6x + 4y = 16

Are the equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

Multiple Choice

y = 2x + 4 and y = (-1/2)x - 9

Are the equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

Multiple Choice

y=2x + 5 and -2x + y = 12

Are the equations parallel, perpendicular, or neither?

• Parallel

• Perpendicular

• Neither

Multiple Choice

Which of the following represents the equation of the line passing through (-4, 5) PERPENDICULAR to the line y = -1/2x + 5/2?

• y = 2x + 13

• y = 2x + 5

• y = -1/2x + 3

• y = -1/4x + 11/2

Multiple Choice

Which is the equation of the line that is parallel to the graph of y = 5x + 7 and has a y-intercept at (0, -2)?

• y = 5x - 2

• y = -2x + 7

• y = 5(x - 2)

• y = -1/5x - 2

Multiple Choice

Which of the following lines is NOT parallel to the graph of line 6x - 8y = 5?

• 9x - 12y = 11

• 3x = 7 + 4y

• -6x + 8y = 3

• 16y = 13 + 6x

Multiple Choice

Which of the following lines is PARALLEL to the graph of 5x + 2y = 8?

• 2x + 5y = 8

• 5x - 2y = 6

• -10x - 4y = 7

• -10x + 4y = 9

Multiple Choice

Which of the following lines is PARALLEL to the graph of y = -6x + 3 and goes through the point (-1,4)?

• y=1/6x +25/6

• y = 1/6x + 4

• y = -6x - 2

• y = -6x + 4