804 Quarterly 1 Review

Front

What is the process to simplify the expression -2y + 8 + 7y + 5?

Back

Combine like terms: -2y + 7y = 5y and 8 + 5 = 13, so the simplified expression is 5y + 13.

Front

How do you perform a dilation of a figure by a scale factor of 3 from the origin?

Back

Multiply each coordinate of the figure by the scale factor. For example, A(3,3) becomes A'(3*3, 3*3) = A'(9,9).

Front

What are the new coordinates of point A(3,3) after dilation by a scale factor of 3?

Back

A'(9,9) after dilation.

Front

What are the new coordinates of point B(6,6) after dilation by a scale factor of 3?

Back

B'(18,18) after dilation.

Front

What are the new coordinates of point C(9,3) after dilation by a scale factor of 3?

Back

C'(27,9) after dilation.

Front

How do you rotate a point 180 degrees around the origin?

Back

Change the signs of both coordinates. For example, (-3,-4) becomes (3,4).

Front

What is the first step in solving the equation 10 - 3y = 4?

Back

Subtract 10 from both sides to isolate the term with y.

Front

How do you solve the equation -6w + 1 = -11 for w?

Back

Subtract 1 from both sides to get -6w = -12, then divide by -6 to find w = 2.

Front

What is the definition of a scale factor in dilation?

Back

A scale factor is a number that scales, or multiplies, the dimensions of a figure.

Front

What is the effect of a dilation with a scale factor greater than 1?

Back

The figure enlarges.