Question

ก
What is the y-intercept of the quadratic function
f(x) = (x - 6)(x - 2)?

Answer 1

y = 12 → (0|12)

Explanation:

f(x) = (x - 6)(x - 2)

y = (x - 6)(x - 2)

y = x² - 6x - 2x + 12

y = x² - 8x + 12

y = 0² - 8*0 +12

y = 12