Grade 10 Maths Unit 3 Assessment

What is the quadratic formula?

• x = (-b ± √(b² - 4ac)) / (2a)

• x = (b ± √(b² - 2ac)) / a

• x = (-b ± 2√(b² - 4ac)) / (2a)

• x = (b ± √(b² + 4ac)) / (2a)

Solve for x: 2x^2 - 4x - 6 = 0

• x = 0

• x = 4

• x = 2

• x = 3, x = -1

What is the sum of the angles in a triangle?

• 90 degrees

• 45 degrees

• 180 degrees

• 360 degrees

Define a linear equation.

• A linear equation is an equation of the form Ax + By = C, where A, B, and C are constants.

• A linear equation is defined by the quadratic formula.

• A linear equation is a polynomial of degree two.

• A linear equation is an equation that graphs as a circle.

If f(x) = 3x + 2, what is f(4)?

• 10

• 16

• 12

• 14

What is the slope of the line passing through (2,3) and (4,7)?

• 2

• 1

• 4

• 3

Calculate the area of a circle with a radius of 5 cm.

• 78.5 cm²

• 100 cm²

• 50 cm²

• 31.4 cm²

What is the Pythagorean theorem?

• In a right triangle, a² - b² = c².

• In a right triangle, a² + b² = c².

• In any triangle, a + b = c.

• In a right triangle, a² + b² = 2c².

If sin(θ) = 0.5, what is θ in degrees?

• 90°

• 60°

• 30° and 150°

• 120°

What is the value of x in the equation 5x + 3 = 18?

• 2

• 3

• 4

• 5