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Grade 10 Functions and Relations CCSS: HSA-REI.D.11
The functions f(x)=3x2-5x-2 and g(x)=2x2-2x+8 are graphed on the same set of axes. What is true about the points of intersection of the two functions? Choose all correct answers.
  1. Without seeing the graph, there is no way to determine if there are any intersection points.
  2. The intersection points occur where f(x)=g(x).
  3. f(5)=48 and g(5)=48, so 5 is an x-coordinate of a point where the two functions intersect.
  4. f(0)=-2 and g(-2)=20, so (0,20) is a point of intersection.
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