<span>The first part of the quadratic formula, x = - b/2a, is the equation of the axis of symmetry, and the x-coordinate of the vertex. </span>
<span>In standard form: - 2x² + 8x - 5 = 0, a = - 2, b = 8, c = - 5 </span>
<span>The axis of symmetry: x = - 8/2(- 2) = - 8/- 4 = 2 </span>
<span>Go back and solve for y to find the y-coordinate of the vertex. </span>
<span>y = - 2(2)² + 8(2) - 5 </span>
<span>y = - 2(4) + 16 - 5 </span>
<span>y = - 8 + 16 - 5 </span>
<span>y = 3 </span>
<span>Vertex is (2, 3)</span>
Answer:
its going ok so far
Step-by-step explanation:
Answer:
? = 12
Step-by-step explanation:
Find the average of the 2 end values, that is
? = 
= 
= 12
Answer:
The distance between points (-5, −3) and (2, −7) is (7, -4)
Step-by-step explanation:
(-5, y) to (2, y) is (7, y)
(x, -3) to (x, -7) is (x, -4)
