Graph y=x^2-10
Problem
Solution
Identify the type of function. This is a quadratic function in the form
y=a*x2+c which represents a parabola.Determine the vertex. Since there is no
x term (b=0 , thex coordinate of the vertex is0 Substitutingx=0 into the equation givesy=−10 The vertex is(0,−10) Find the y-intercept. Setting
x=0 results iny=−10 Find the x-intercepts. Set
y=0 and solvex2−10=0 which givesx=±√(,10) or approximately±3.16 Determine the opening direction. Since the coefficient of
x2 is positive (a=1 , the parabola opens upward.Plot additional points to define the shape. For
x=±1 y=−9 Forx=±2 y=−6 Forx=±4 y=6 Sketch the curve. Draw a smooth U-shaped curve passing through the vertex
(0,−10) and the calculated points.
Final Answer
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