Fx x2 4x 5

Username: Password: Register in one easy step! Reset your password if you forgot it. Algebra: Graphs, graphing equations and inequalities Section. Solvers Solvers.

Please ensure that your password is at least 8 characters and contains each of the following:. Enter a problem Algebra Examples Popular Problems. Find the properties of the given parabola. Rewrite the equation in vertex form. Complete the square for. Use the form , to find the values of , , and.

Fx x2 4x 5

Substitute the values of, and into the vertex form. Set equal to the new right side.

Fx x2 4x 5

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The directrix of a parabola is the horizontal line found by subtracting from the y-coordinate of the vertex if the parabola opens up or down. Cancel the common factor. Select a few values, and plug them into the equation to find the corresponding values. Also, the y-value for is equal to the y-value of. One to any power is one. Substitute the value of into the formula. Username: Password: Register in one easy step! Multiply by. Cancel the common factor of. Substitute the known values of , , and into the formula and simplify.

So we essentially reflected the point 0,-5 over to 4, So the vertex is. Find the directrix. Graph the parabola using its properties and the selected points. Substitute the values of and into the formula. So when , which gives us the point 3, Use the vertex form, , to determine the values of , , and. The directrix of a parabola is the horizontal line found by subtracting from the y-coordinate of the vertex if the parabola opens up or down. Please ensure that your password is at least 8 characters and contains each of the following:. Rewrite the expression.

Fx x2 4x 5

Fx x2 4x 5

Fx x2 4x 5

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