Geometry help please.

Mathematics

1 answer:

Vaselesa [24]3 years ago

6 0

Answer:

Set A

Step-by-step explanation:

Reflection is a flip, so you need to flip the rectangle over the x-axis. So since the rectangle will end in quadrant 4, the x coordinates are all positive and the y coordinates are all negatives. Look at your choices and see what you can eliminate. Set B & C are out because they have negative x coordinates. Set D is out because the y coordinates are NOT negative, so that leaves Set A as the answer.

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4x-2y-x+5y-8<br> What is the coefficient of the x-term of the fully simplified expression ?

White raven [17]

Answer:
The coefficient of x is 3.
Step-by-step explanation:
Coefficient is a multiplicative factor in some term of a polynomial, a series, or any expression; it is usually a number, but may be any expression. In the latter case, the variables appearing in the coefficients are often called parameters, and must be clearly distinguished from the other variables. The coefficients of an algebraic term can be positive or negative, and this multiplies the unknown term.
For example:
In 2a, 2 is the coefficient of a;
In x, 1 is the coefficient of x but it is not visible;
In 2/3p, 2/3 is the coefficient of p;
In -3f, -3 is the coefficient of f.
In 2t + t -f + 2f + 8, 3 is the coefficient of x and 1 the coefficient of y (2t + t = 3t, - f + 2f = f)
Variable is a symbol, commonly a single letter, that represents a number, called the value of the variable, which is either arbitrary, not fully specified, or unknown. Making algebraic computations with variables as if they were explicit numbers allows one to solve a range of problems in a single computation. A typical example is the quadratic formula, which allows one to solve every quadratic equation by simply substituting the numeric values of the coefficients of the given equation for the variables that represent them.
For example:
2k + 4, k is the variable;
-4 - 5x, x is the variable.
So,
4x - 2y -x +5y - 8
combine the like terms
4x - x -2y + 5y -8
3x +3y -8
In 3x - 8, 3 is the coefficient of x;
In 3y - 8, 3 is the coefficient of y;
x and y are the variables; and
-8 is the constant coefficient.