Understanding Perpendicular Lines and Slope-Intercept Form
Interactive Video
•
Mathematics
•
8th - 10th Grade
•
Practice Problem
•
Hard
+1
Standards-aligned
Lucas Foster
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the general form of a line in slope-intercept form?
y = mx + b
y = x^2 + bx + c
y = ax^2 + bx + c
y = a/x + b
Tags
CCSS.8.EE.B.6
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between the slopes of perpendicular lines?
They are both negative
They are opposite reciprocals
They are equal
They are both positive
Tags
CCSS.8.EE.B.6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a line has a slope of -2, what is the slope of a line perpendicular to it?
-2
1/2
-1/2
2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't we assume the y-intercept of a perpendicular line is the same as the original line?
Because the x-intercept changes
Because the line equation changes
Because the slopes are different
Because the y-intercept depends on the specific line
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in finding the y-intercept of a new line?
Guess the y-intercept
Plug in a point into the equation
Change the slope
Use the original line's y-intercept
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When given a point (-3, -2), how do you use it to find the y-intercept?
Subtract them
Add them together
Plug -3 into x and -2 into y
Plug -3 into y and -2 into x
Tags
CCSS.HSF.IF.A.1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of b if the equation is y = 1/2x + b and the point (-3, -2) is on the line?
-1/2
0
-2
1/2
Tags
CCSS.8.EE.B.6
CCSS.8.F.A.3
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