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Example Questions
Example Question #172 : Psat Mathematics
Where does the line given by intercept the
-axis?
Possible Answers:
Correct answer:
Explanation:
First, put in slope-intercept form.
.
To find the -intercept, set
and solve for
.
Example Question #173 : Psat Mathematics
Find the y-intercept of .
Possible Answers:
7
5
3
12
14
Correct answer:
7
Explanation:
To find the y-intercept, set x equal to zero and solve for y.
This gives y = 3(0)2 + 2(0) +7 = 7.
Example Question #174 : Psat Mathematics
The slope of a line is . The line passes through
. What is the x-intercept?
Possible Answers:
None of the available answers
Correct answer:
Explanation:
The equation for a line is:
, or in this case
We can solve for by plugging in the values given
Our line is now
Our x-intercept occurs when , so plugging in and solving for
:
Jody
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