Answer:
The first option
Step-by-step explanation:
Given a quadratic function in standard form : ax² + bx + c : a ≠ 0, then
The equation of the axis of symmetry which is also the x- coordinate of the vertex is found using
x = - 
f(x) = - 2x² - 2x - 1 ← is in standard form
with a = - 2, b = - 2, so
x = - 
= - 0.5
Equation of axis of symmetry is x = - 0.5
Substitute x = - 0.5 into f(x)
f(- 0.5) = - 2(- 0.5)² - 2(- 0.5) - 1 = - 0.5 + 1 - 1 = - 0.5
Vertex = (- 0.5, - 0.5 )
A right skewed distribution/graph is the same as a positively skewed graph!
In this case, a right-skewed graph increases then decreases from left to right.
Your answer is B!
Answer:
slope = 4
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - 5 + 4x, that is
y = 4x - 5 ← is in slope- intercept form
with slope m = 4
Step-by-step explanation:
The snowplow's speed is 40 mph minus the loss from the snow, which is 1.2 mph times the depth of snow in inches.
y = 40 − 1.2x
When y = 0:
0 = 40 − 1.2x
1.2x = 40
x = 33 ⅓
The snowplow stops moving when the snow is 33 ⅓ inches deep or more.
