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At how many points does the graph of the function below intersect the x-axis? y = 2x^2 - 7x + 7

Respuesta :

Graph will not interesct bcz equation doesn't have x intercept.

Answer:

0

No such point on graph.

Step-by-step explanation:

Given: [tex]y=2x^2-7x+7[/tex]

We are given quadratic equation. We need to find number of points where it cuts x-axis.

When graph cuts x-axis their y-value is 0

We will set the equation to 0 and solve for x

[tex]2x^2-7x+7=0[/tex]

Using quadratic formula.

[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

where, a=2 , b=-7 , c=7

[tex]x=\dfrac{7\pm\sqrt{49-56}}{2(2)}[/tex]

[tex]x=\dfrac{7\pm \sqrt{-7}}{4}[/tex]

[tex]x=\dfrac{7\pm i\sqrt{7}}{4}[/tex]

The value of x is imaginary. So, y will not cut x-axis any any point.

Hence, No such point on graph which cut x-axis.