6) check picture
a) all three lines are parellel and have the same slope. the only difference is that they are translated on different points on the x-axis.
not sure about the rest sorry :(
a brand of cereal had 1.2 milligrams of iron per serving. then they changed their recipe so they had 1.8mg of iron per serving.
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We have the following function that is a quadratic function:
So the graph of this function is shown in the figure below. This is a <em>parabola</em> as you can see. The roots of this functions, that is, the x-intercepts are:
As you can see in the figure. This function decreases from
and increases from 
Finally, another thing we can see from the graph is that the vertex is the point:
So the graph of this function is shown in the figure below. This is a <em>parabola</em> as you can see. The roots of this functions, that is, the x-intercepts are:
As you can see in the figure. This function decreases from
Finally, another thing we can see from the graph is that the vertex is the point: