8.1 Linear Function

Question 1

What kind of line is represented by x=c

Answer 1

A vertical line AND ITS NOT A FUNCTION

Question 2

Functions are functions if they pass what kind of test?

Answer 2

A vertical line test

Question 3

Whats the first step in graphing a function, such as g(x)=2x+1

Answer 3

Find three ordered pairs.

Question 4

Slope-intercept formula

Answer 4

y=mx+b, m is the slope and (0,b) is the y intercept

Question 5

Define linear function.

Answer 5

A function that can be written in the form f(x)=mx+b

Question 6

Break down the term linear function .

Answer 6

Linear - the graph of a line

Function - that passes the vertical line test

Question 7

Point-slope form

Answer 7

y – y1 = m(x – x1). The slope is m, and (x1,y1) is a point on the line

Question 8

y=c. Find that kind of line this is.

Answer 8

a horizontal line. The slope is 0 and the y intercept is (0,c)

Question 9

if two points of a line are given ________

Answer 9

either one may be used with the point slope form to write an equation of the ine

Question 10

Lines that are parallel have _____ slopes

Answer 10

the same. Parallel lines have equal slopes

Question 11

Lines that are perpendicular have _____ slopes.

Answer 11

negative reciprocal . Lines that are perpendicular have slopes like this
slope 1 = a
slope 2 = -1/a