SOLUTION: Q.1) The question reads "solve the equation x^2-1=8 by using the graph." The graph has an open (upward facing) parabola. It has a y-intercept of -1; x-intercept's at -1, 1.

Question 634987: Q.1) The question reads "solve the equation x^2-1=8 by using the graph."
The graph has an open (upward facing) parabola. It has a y-intercept of -1; x-intercept's at -1, 1.
How do I answer this question? I'm not sure what I need to do...
Q.2) The question reads "express the following as a compound inequity and graph"
it states "x" is between -4 to 6.
There is a graph.
How do I properly answer this on the graph?
Thank you.
Answer by jsmallt9(3758) (Show Source): You can put this solution on YOUR website!
The graph you describe is the graph of:

This graph can be used to solve

because the two equations are the same except one has a y and the other has an 8. To solve the equation using the graph:

Find the points where y = 8 on the graph. They form a horizontal line that passes through 8 on the y-axis.
Find where this horizontal line intersects the parabola. You should find two points, one to the right of the y-axis and one to the left.
The x-coordinates of these points are the solutions to your equation.
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