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

value of y depends on a value of x,y.

Question 4

Independent Variable

Answer 4

the x value.

Question 5

Y-Intercept

Answer 5

point at which the line crosses the y-axis.

Question 6

X-Intercept

Answer 6

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

ratio of the vertical change to a corresponding horizontal change.

Question 9

Point-Slope Form

Answer 9

The line through (x1,y1) with slope m has this equation; y - y1 = m(x - x1)

Question 10

Slope-Intercept Form

Answer 10

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