2.2: Linear Equations

Question 1

Linear Function

Answer 1

A function whose graph is a line.

Question 2

Linear Equation

Answer 2

A solution of a linear equation is any ordered pair (x,y) that makes the equation true.

Question 3

Dependent Variable

Answer 3

The y- value

Question 4

Independent Variable

Answer 4

The x-value

Question 5

Y-intercept

Answer 5

The point at which the line crosses the y-axis.

Question 6

X-intercept

Answer 6

The point at which the line crosses the x-axis.

Question 7

Standard Form of a Linear Equation

Answer 7

Ax+By=C, where A,B, and C are real numbers, and A and B are not both zero.

Question 8

Slope

Answer 8

The slope of a nonvertical line is the ratio of the vertical change to a corresponding horizontal change.

Question 9

Point-Slope Form

Answer 9

When you know the slope and a point on a line, you can use point-slope form to write the equation of the line.

Question 10

Slope-Intercept Form

Answer 10

Another form of the equation of a line is slope-intercept form, which you can use to find slope by examining the equation.