12/13 Final Review Part 2

Front

What is the formula to find the other endpoint of a line segment given one endpoint and the midpoint?

Back

If A(x1, y1) is one endpoint and M(xm, ym) is the midpoint, then the other endpoint B(x2, y2) can be found using the formulas: x2 = 2*xm - x1 and y2 = 2*ym - y1.

Front

What is the slope of a line parallel to the line given by the equation y = 2x + 3?

Back

The slope of a line parallel to y = 2x + 3 is 2, since parallel lines have the same slope.

Front

What is line symmetry?

Back

Line symmetry occurs when a shape can be divided into two identical halves that are mirror images of each other.

Front

What is rotational symmetry?

Back

Rotational symmetry is when a shape can be rotated around a central point and still look the same at certain angles.

Front

How do you determine if a letter has line symmetry?

Back

A letter has line symmetry if it can be divided into two identical halves by a straight line.

Front

What is the value of x in the equation 2x + 5 = 31?

Back

x = 13.

Front

What is the value of y in the equation 3y - 7 = 80?

Back

y = 29.

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

What is the midpoint formula?

Back

The midpoint M of a line segment with endpoints A(x1, y1) and B(x2, y2) is given by M = ((x1 + x2)/2, (y1 + y2)/2).

Front

What is the definition of a parallel line?

Back

Parallel lines are lines in a plane that never meet; they have the same slope.