Grade 9 Math Quiz Bee

Quadratic Equation

100

What is the standard form of x² = 9 – 13x ?

x² + 13x - 9 = 0

200

Factor x² - 16

(x + 4) (x - 4)

300

Factor of 5x² - 25x?

5x (x - 5)

400

What is the factored form of the quadratic equation  2𝒙² − 7𝒙 − 4?

(2x + 1) (x - 4)

500

Find the value of x in quadratic equation 𝒙² − 𝟏𝟑𝒙 +𝟒𝟎

x = 8 and 5

Variation

100

Translate the statement into an equation “The price of gas varies (P) directly to the capacity of gas tank (G)."

P = kG

200

"y varies directly to x." if k=3 and x = 4. Solve for the value of y.  

y= 12

300

"A varies directly to B." Find the value of k, If A = 12 and B = 4.

k = 3

400

“y varies inversely to x”. Find the value of y if x = 5 and the constant is -40.

y = -8

500

“y varies jointly to x and z”. If x = 10, z = 9 and y = 180, What is the value of k?

k = 2

Laws of exponent

100

Solve: a² + a²

2a²

200

Simplify (x)(x²)(x³)

x⁶

300

Simplify b⁴ divided by a²b².

b²/a²

400

Write in exponent form. Cube root of (a+b)² .

(a+b)^2/3

500

Simplify y^-4 over x²y^-8.

y²/x²

Quadrilateral

100

A quadrilateral with exactly one pair of parallel sides.

Trapezoid 

200

The measurement of angle X is 90° and it bisected by the diagonal into ∠1 and ∠2. What is the measurement of each angle?

45°

300

Solve for the missing angle of a parallelogram. If m∠1 and ∠3 = 135, m∠2 and ∠4 =______?

90

400

SURF is a rectangle and RF is congruent to US. Find the value of x if RF = x-1 and US = 5x -13

x = 3

500

Base 1 = 5 and base 2 = 7, solve for the midsegment.

6

Special Parallelograms

100

A parallelogram with four congruent sides.

Rhombus

200

If a parallelogram is a square, what is the measurement of the other sides if side 1 = 6

6

300

This ⟂ symbol is for?

Perpendicular 

400

What is the measurement of each angle in rectangle?

90

500

∠A and ∠B are consecutive angles. m∠A= 2x -5 and m∠B = x + 65. Solve for the value of x

40