Question 185908
Yet more issues, will this homework never end? 
It will end once you're out of school and in prison.
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1. Find the x-intercepts 
The x-intercepts are where the graph crosses the x-axis and y = 0.  These are the zeroes of the equation, the values of x that make the eqn = 0.  In other words, the answers.
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y = x² + 4x – 1 
*[invoke solve_quadratic_equation 1,4,-1]
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2. Evaluate the discriminant b² - 4ac. Then use the answer to state how many real number solutions exist for the equation. 
y = x² + 8x + 16
The onsite solver does a good job of that.
*[invoke solve_quadratic_equation 1,8,-16]