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48. Connecting Graphs and Equations The curves on the graph below are the graphs of the three curves given by 4x+ 5 = + 2x -
(b) Write an equation that can be solved to find the x-intercepts of the graph of y3. (c) Writing to Learn How does the graph
48. Connecting Graphs and Equations The curves on the graph below are the graphs of the three curves given by 4x+ 5 = + 2x - x +3 y3= x3 - 2125x2 15 10 5 T T -21 -5-4 34 5 1 -5 -10 (a) Write an equation that can be solved to find the points of intersection of the graphs of yi and y2.
(b) Write an equation that can be solved to find the x-intercepts of the graph of y3. (c) Writing to Learn How does the graphical model re- flect the fact that the answers to (a) and (b) are equivalent algebraically? (d) Confirm numerically that the x-intercepts of y3 give the same values when substituted into the expressions for yi and y2.
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