9.23 Perpendicular Lines

Multiple Choice

Arnoldo graphed a linear function on the graph. Which statement best represents the equation of the line shown on the grid and its relationship to the x-axis? (activity sheet-last page)

• The equation of the line is x = −1, and the line is perpendicular to the x-axis.

• The equation of the line is x = −1, and the line is parallel to the x-axis. 

• The equation of the line is y = −1, and the line is perpendicular to the x-axis.

• The equation of the line is y = −1, and the line is parallel to the x-axis.

Labeling

Lap 1: Write the opposite reciprocal for each of the following numbers.

Drag labels to their correct position on the image

Multiple Choice

Lap 3: Aaliyah drew a line that passes through the point (1, −7) and is perpendicular to the line $$y=\frac{1}{2}x+1$$ .

What is the equation of Aaliyah’s line?

• $$y=2x-1$$

• $$y=-2x-5$$

• $$y=\frac{1}{2}x-1$$

• $$y=-\frac{1}{2}x+1$$

Multiple Choice

April wrote an equation of the line perpendicular to the line 

3x + 2y = 2 and contains the point (1, −2). Which of the following represents the equation?

• $$3x-2y=8$$

• $$3x+2y=8$$

• $$2x+3y=8$$

• $$2x-3y=8$$

Multiple Select

Mrs. Jackson asked her students to write equations perpendicular to the line on the graph. Which lines would be perpendicular? Select THREE correct answers. (activity sheet)

• $$y=-3x+2$$

• $$y-5=-3\left(x+3\right)$$

• $$3x+y=-4$$

• $$3x-y=4$$

• $$y=-\frac{1}{3}x-4$$