What method would you choose to solve the equation 2x^2-7=9? Explain why you chose this method
1 answer:
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Vertex<em> </em>is at
<em>y-intercept</em> is 3.
The parabola <em>opens up</em>.
Step-by-step explanation:
The graph of the equation is hereby attached in the answer area.
Vertex is the point on the parabola where the graph crosses its axis of symmetry. The axis of symmetry here(), is shown with the dotted line in the graph attached.
<em>y-intercept </em>is defined as the value of y where the graph crosses the y-axis. In other words, when . Putting
And, the graph opens up as shown the graph figure as well. It is also evident from the co-efficient of in the given equation
. Here, co-efficient of
So, vertex<em> </em>is at
<em>y-intercept</em> is 3.
The parabola <em>opens up</em>.
Answer:
Between 0 and 1
Step-by-step explanation:
The given expresion is
Recall that:
We apply this property of exponents to get;
We rewrite to obtain a positive index as:
Therefore the value of the expression is between 0 and 1.