a. Calculate the value of the discriminant for each of these five functions:

i. f(x) = x² + 8x + 3 

ii. g(x) = 2x² − 3x + 4 

iii. h(x) = −x² + 7x − 3

iv. j(x) = x² − 8x + 16 

v. k(x) = 2x − 3x2 − 4

b. Using your answers to part a, match the same five functions to these sketch graphs

i.

ii.

iii.

iv

v.

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