Class 11 Mathematics - Conic Sections - Standard equations and simple properties of a Parabola Expert Quiz

Level 35 • 2/50 questions • 25 seconds per question.

Level readiness 2/50 Questions
Time Left 00:50 25 sec/question
RewardsCoins + XP
ModeClassic Quiz
Share
This level needs 48 more active questions. Admin panel me same class, subject, difficulty aur level_no 35 par question add karein.
Question 1 / 2 0 score
Answered 0/2 Correct 0 Time 00:50

परवलय \(y=-2(x+3)^2+7\) की सममिति-अक्ष क्या है?

What is the axis of symmetry of the parabola \(y=-2(x+3)^2+7\)?

Explanation opens after your attempt
Correct Answer

A. \(x=-3\)

Explanation

Simple Explanation

परवलय के शीर्ष-रूप \(y=a(x-h)^2+k\) में सममिति-अक्ष \(x=h\) होती है। यहाँ \(x+3=x-(-3)\), इसलिए \(h=-3\) और सममिति-अक्ष \(x=-3\) है। \(y=7\) शीर्ष का y-निर्देशांक है, सममिति-अक्ष नहीं। परीक्षा-युक्ति: वर्ग वाले पद को \((x-h)^2\) के रूप में लिखकर सीधे \(x=h\) पहचानें। / In the vertex form \(y=a(x-h)^2+k\), the axis of symmetry is \(x=h\). Here, \(x+3=x-(-3)\), so \(h=-3\) and the axis is \(x=-3\). The value \(y=7\) is the y-coordinate of the vertex, not the axis of symmetry. Exam tip: rewrite the squared term as \((x-h)^2\) and identify \(x=h\) directly.

Open Question Page
Ask Friends

फलन \(y=(x+1)^2-9\) का \(y\)-अक्ष पर प्रतिच्छेद-बिंदु क्या है?

What is the point where the graph of \(y=(x+1)^2-9\) intersects the \(y\)-axis?

Explanation opens after your attempt
Correct Answer

A. \((0,-8)\)

Explanation

Simple Explanation

\(y\)-अक्ष पर प्रत्येक बिंदु के लिए \(x=0\) होता है। इसलिए \(y=(0+1)^2-9=1-9=-8\), अतः प्रतिच्छेद-बिंदु \((0,-8)\) है। विकल्प B परवलय का शीर्ष है, \(y\)-अक्ष पर प्रतिच्छेद नहीं। परीक्षा-युक्ति: \(y\)-अक्ष का प्रतिच्छेद ज्ञात करने के लिए हमेशा \(x=0\) रखें। / Every point on the \(y\)-axis has \(x=0\). Thus, \(y=(0+1)^2-9=1-9=-8\), so the point of intersection is \((0,-8)\). Option B is the vertex of the parabola, not its \(y\)-intercept. Exam tip: To find a graph’s \(y\)-intercept, substitute \(x=0\).

Open Question Page
Ask Friends
FAQs

Class 11 Mathematics Quiz FAQs

How many questions are in this quiz?

This level is designed for 50 active questions. Currently 2 questions are available for the selected class and difficulty.

Is there a timer in this quiz?

Yes, the timer uses 25 seconds per question for Expert difficulty and shows the total remaining time on the page.

Can I open each question separately?

Yes, every question has its own SEO-friendly page with answer, explanation and related practice links.