SOLUTION: Using the graph of y = x squared + 4x - 5. 1) Without solving the equation or factoring, determine the soluction to the equation, x squared + 4x - 5 = 0 using only the graph. E

Algebra ->  Graphs -> SOLUTION: Using the graph of y = x squared + 4x - 5. 1) Without solving the equation or factoring, determine the soluction to the equation, x squared + 4x - 5 = 0 using only the graph. E      Log On


   

Question 433045: Using the graph of y = x squared + 4x - 5.
1) Without solving the equation or factoring, determine the soluction to the equation, x squared + 4x - 5 = 0 using only the graph. Explain in a simple sentence
2) Does this function have a maximum or a minimum? Explain in simple sentence
3) What are the coordinates of the vertex in (x, y) form?
4) What is the equation of the line of symmetry for this parabola?
Found 2 solutions by stanbon, MathLover1:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Using the graph of y = x squared + 4x - 5.
1) Without solving the equation or factoring, determine the solution to the equation, x squared + 4x - 5 = 0 using only the graph. Explain in a simple sentence.
graph%28400%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E2%2B4x-5%29
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2) Does this function have a maximum or a minimum? Explain in simple sentence
Minimum because it opens up.
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3) What are the coordinates of the vertex in (x, y) form?
(-2,-9)
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4) What is the equation of the line of symmetry for this parabola?
x = -2
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cheers,
Stan H.
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Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
Using the graph of
y+=+x%5E2+%2B+4x+-+5

+graph%28+500%2C+500%2C+-10%2C+10%2C+-10%2C+10%2C+x%5E2+%2B+4x+-+5%29+
1. the solution to the equation:
x=1 or x=-5
x-intercepts: (1,0) (-5,0)
2.this function have a minimum; it opens upward
3. the coordinates of the vertex are (-2, -9)
4. the equation of the line of symmetry for this parabola is x=-2