Step by step on how to solve this problem?

x =

Step-by-step explanation:

Given the graph intersects the y- axis at (0, - 18), then substitute the coordinates into the equation y = x² + bx + c

- 18 = 0 + 0 + c ⇒ c = - 18

In the same way substitute (6, 0) into the equation

0 = 6² + 6b - 18

0 = 36 + 6b - 18

0 = 18 + 6b ( subtract 18 from both sides )

- 18 = 6b ( divide both sides by 6 )

- 3 = b

Hence equation is

y = x² - 3x - 18

Given the equation in standard form : y = ax² + bx + c : a ≠ 0

Then the x- coordinate of the vertex is

= -

y = x² - 3x - 18 is in standard form

with a = 1, b = - 3, c = - 18, hence

= - =

The x- coordinate of the turning point is

what? ?

what type of question is thiss

step-by-step explanation:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!