Answer:
see explanation
Step-by-step explanation:
a
f(0) means find the value of y when x = 0
That is f(0) = 1 ← the point (0, 1) on the graph
b
When f(x) = - 3 means what are the values of x corresponding to y = - 3
From the graph when y = - 3 there are 2 corresponding values of x, that is
x = - 2 or x = + 2
The solution to f(x) = - 3 is x = ± 2
Answer:
(-20,-10)
Step-by-step explanation:

Solve for.x coordinate

solve for y coordinate

Answer:
a figure with four straight sides and four right angles.
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Given a quadratic equation in standard form : ax² + bx + c = 0
We can solve for x using the quadratic formula
x² + 2x + 9 = 0 ← is in standard form
with a = 1, b = 2 and c = 9
x = ( - 2 ±
) / 2
= ( - 2 ±
) / 2
= (- 2±
) / 2)
= (- 2 ±
) / 2
= ( - 2 ± 4i
) / 2
=
± 
= - 1 ± 2i
→ D