A rational number is written in the form p/q, where p and q are not integers and q is not equal to 0.
An irrational number can be written in decimal form and possibly no end. In simple words, an irrational number cannot be expressed as a fraction.
A) To factor a quadratic equation, standard form is the better form to use because it is easier to pull out a common factor from.
b) To graph a parabola, it is better to use vertex form so that you will know what point to graph as the vertex of the parabola.
c) To identify the vertex, maximum and minimum, it is better to use vertex form because the vertex form will give the values of the coordinates for the vertex. Then, you can use the equation to find the mininmum or maximum. If the graph is negative, it will have a maximum because it points downward infinitely. If the equation is positive, the graph will have a minimum because the graph points upward infinitely.
d) Standard form is easier to use when trying to solve using the quadratic formula because it is easier to see what the coeffiecnts and constants are to plug in for a b and c.
The area of the triangle is 10 sq units
<u>SOLUTION:
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Given, we have to find the area of a triangle whose vertices are D(3, 3), E(3, −1) and F(−2, −5)
We know that,
Where, are vertices of the triangle.
Here in our problem,
Now, substitute the above values in the formula.
Put both fractions into an improper fraction.... 33/7 - 13/7. then you subtract the numerators.. so its 20/7 or 2 6/7.