quadratic function

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If we want to determine the point of intersection of a quadratic function curve, we must know the conditions. To intersect the x-axis, it must be y = 0, as well as to get intersection in y-axis, it must be x = 0. Thus:

a) y = x² - 15x + 26

• intersect in x-axis :

y = x² - 15x + 26

0 = x² - 15x + 26

0 = (x - 2)(x - 13)

intersection point is (2 , 0) & (13 , 0)

• intersect in y-axis

y = x² - 15x + 26

y = 0² - 15(0) + 26

y = 26

intersection point is (0 , 26)

b) Try it by yourself !

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