1 of 8 0-day streak

Calculate and interpret a quadratic discriminant

Question 1 of 8

No calculator

Consider the quadratic equation shown below

-2x^2 + 6x - 6 = 0

Use exact values throughout. Do not solve the equation

(a)3 marks

Identify the three coefficients in the zero-form equation

\(a\) \(b\) \(c\)

(b)1 mark

Use the coefficient values to find the exact value of Δ

\(\Delta\)

Choose the intercept conclusion supported by the discriminant

There are two horizontal-axis intercepts with irrational x-coordinates

There are no horizontal-axis intercepts because there are no real roots

There is one horizontal-axis intercept at a rational x-coordinate, where the graph touches the axis

There are two horizontal-axis intercepts with rational x-coordinates