2021 Algebra 1 SOL Review Part 2 of 4

Front

What is the solution to the equation -2(x + 3) + 5x = -15?

Back

-3

Front

What is the transitive property of equality?

Back

If a = b and b = c, then a = c.

Front

What is the reflexive property of equality?

Back

For any number a, a = a.

Front

What is the symmetric property of equality?

Back

If a = b, then b = a.

Front

What is the commutative property of multiplication?

Back

a × b = b × a for any numbers a and b.

Front

What is the definition of a linear equation?

Back

An equation that makes a straight line when graphed.

Front

What is the slope-intercept form of a linear equation?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1).

Front

What does it mean for two lines to be parallel?

Back

They have the same slope and will never intersect.

Front

What does it mean for two lines to be perpendicular?

Back

Their slopes are negative reciprocals of each other.