QQuestionMathematics
QuestionMathematics
How do I find equation of the line of symmetry?
7 Refer to the following graph of $y=x^{2}- 1$ to answer the following questions.
(a) What is the value of $y$ when $x= 1$ ?
Answer: (a)
(b) Write down the equation of the line of symmetry.
Answer: (b)
(c) What is the least value of $y$ ?
Answer: (c)
(d) Draw the line $y= 1$.
Answer: (d) On the graph
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Answer
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Step 1: To find the value of $y$ when $x = 1$, substitute $
y = (3)^{2} - 2
Step 2: Calculate the value of $y$.
So, the value of $y$ when $x = 3$ is 7.
Final Answer
(a) The value of $y$ when $x = 1$ is 7. (b) The equation of the line of symmetry is $x = 1$. (c) The least value of $y$ is $- 9 / 1$. (d) The line $y = 1$ is a horizontal line passing through the point $(0, 7)$.
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