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Graphs of Linear Equations in Two Variables 1
A
B
Result
. . . .

Choose the correct answer to each question.

1. What quantity measures the steepness of a line?
x-intercept
y-intercept
slope
none of the choices
Answer: slope
2. What is the slope of a horizontal line?
0
1
undefined
none of the choices
Answer: 0
3. What is the slope of a vertical line?
0
1
undefined
none of the choices
Answer: undefined
4. Which describes the orientation of a line with a positive slope?
falls from left to right
rises from left to right
vertical
horizontal
Answer: rises from left to right
5. Which describes the orientation of a line with a negative slope?
falls from left to right
rises from left to right
vertical
horizontal
Answer: falls from left to right
6.
 A line that passes through the origin has a slope of −5 2 . Which of the following points lie on this line?
(4,  10)
(4,  −10)
(−4,  10)
none of the choices
Answer: ( 4 ,    − 10 )
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