Evaluate −f(a) f(x)=−5x²+2x−1
1 answer:
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<em>Independent variables are variables of a quantity that are not affected by any conditions. </em>
<em>Dependent variables are variables of a quantity that change if conditions relative to that variable changes.</em>
For example, we generally we take x as independent variable by x variable and dependent variable by y variable.
To find the rate of change we get two values of independent variable (x's) and two values of dependent variables (y's) to get two coordinates in form of
(x,1,y1) and (x2,y2).
<h3>And we can find the rate of change by applying slope formula</h3>.
Answer:
The parabola generated by the expression :
is the one that better represents a rain gauge above the ground.
Step-by-step explanation:
The function:
a)
Direction of parabola: branches pointing up
Location of vertex relative to x-axis: below
So, the parabola doesn't depict a rain gauge off the ground
b)
Direction of parabola: branches pointing down
Location of vertex relative to x-axis: above
So, the parabola doesn't depict a rain gauge off the ground
c)
Direction of parabola: branches pointing up
Location of vertex relative to x-axis: two units above
So, the parabola depicts a rain gauge off the ground
d)
Direction of parabola: branches pointing up
Location of vertex relative to x-axis: right on the x-axis
So, the parabola doesn't depict a rain gauge off the ground (this is sitting on the ground)
e)
Direction of parabola: branches pointing up
Location of vertex relative to x-axis: below
So, the parabola doesn't depict a rain gauge off the ground