3 years ago

What's the vertex of the following equation x² - 6x + 5

Mathematics

1 answer:

igomit [66]3 years ago

7 0

Answer:

Step-by-step explanation:

To find the vertex, change the following equation into graphing form (vertex form)

(x-3)^2-4 - graphing form

The vertex is (3,-4) because you find the x intercept by doing the opposite of -3, and -4 is in the equation.

vertex=

(3,-4)

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Solve the system using substitution x+5y=0 3y+2x=-21

Crazy boy [7]

Answer:

$\left \{ {{x = -15} \atop {y=3}} \right.$

Step-by-step explanation:

$\left \{ {{x + 5y = 0} (1) \atop {3y + 2x = -21}(2)} \right. \left \{ {{x = -5y} \atop {3y + 2x = -21}} \right. \left \{ {{x = -5y} \atop {3y + 2*(-5y) = -21}} \right. \left \{ {{x = -5y} \atop {3y - 10y = -21}} \right. \\ \left \{ {{x = -5y } \atop {-7y = -21}} \right. \left \{ {{x = -5y} \atop {y= 3 }} \right. \left \{ {{x = -5 * 3} \atop {y=3}} \right.=> \left \{ {{x=-15} \atop {y=3}} \right.$