Chapter 5 Linear Equations

Question 1

general description of slope

Answer 1

rise over run

Question 2

how to calculate slope

Answer 2

change in y (y2 - y1) divided by the change in x (x2 - x1)

Question 3

slope intercept form of the line

Answer 3

y = mx + b

Question 4

Which letter in the equation represents slope?
y = mx + b

Answer 4

y = mx + b
m is the slope

Question 5

Which letter in the equation represents the y-intercept?
y = mx + b

Answer 5

y = mx + b
b is the y-intercept

Question 6

Point-slope equation of a line

Answer 6

y - y1 = m (x - x1)

Question 7

In the equation below what are x1 and y1?
y - y1 = m (x - x1)

Answer 7

(x1, y1) is a point on the line

Question 8

standard form of the equation of a line

Answer 8

Ax + By = C

Question 9

in the equation of the line Ax + By = C, what are limitation on the values of A, B, and C

Answer 9

A, B, and C cannot be fractions or decimals, and A must also be greater than or equal to 0.

Question 10

If lines are parallel, what is true about their slope?

Answer 10

slopes are equal

Question 11

If lines are perpendicular, what is true about their slope?

Answer 11

slopes are opposite reciprocals of each other

Question 12

What is the equation for direct variation?

Answer 12

y = kx

Question 13

What shows the relationship between two changing quantities?

Answer 13

rate of change (examples: miles per hour or temperature change per minute)

Question 14

True or False: the graph of a direct variation will always pass through (0,0)

Answer 14

True

Question 15

where the graph of a line crosses the y-axis

Answer 15

y-intercept

Question 16

where the graph of a line crosses the x-axis

Answer 16

x-intercept