Review - Linear Equations Test

Finding Slope

100

What does a 0 slope and Undefined slope look like?

0 slope is a horizontal line, undefined slope is a vertical line

200

Identify the slope of the following equation.                y-3= -3(x+3)

slope is -3

300

What is the slope formula?

y₂-y₁/x₂-x₁

400

Find the slope of the line that includes the following points. (4, -5) (-4, 5)

-10/8 which simplifies to -5/4

500

Write a 'y=mx+b' equation using  (-12, -9) (-3, -3) to find the slope and a y-intercept of -5

y = 2/3x - 5

Formats of Linear Equations

100

What format is the following :  y = mx + b

the slope-intercept form

200

a )What format has x and y on the same side of the equation?

b) What format has parentheses? 

a) standard form

b) point- slope

300

Convert the following into slope intercept form:

y - 4= -3(x + 2)

y = -3x -2 

400

Convert the following into slope intercept form:

-4x + 8y = 24 

y = 1/2x + 3

500

Rewrite the following equation in slope-intercept form. 3.5x - 7y = -21

y = 0.5x - 3 or y = 1/2x - 3

Writing Linear Equations

100

What is slope and y -intercept of this equation ?

y = -4/5x

slope = -4/5 

y-intercept = 0

200

What is the following equation in standard form? y = -3/4x

y+3/4x=0

300

Rewrite this equation in slope-intercept form. x + y = -12

y = -x - 12

400

Write an equation IN SLOPE INTERCEPT for a line with the following slope and points.

 m = 2/3   and (0, -2),  (3, 0)

y = 2/3x - 2

500

Write an equation that goes through the point (-4,-2) and has a slope of -9 

y + 2= -9(x+4)

Parallel + Perpendicular

100

Parallel lines have the ____ slopes.

Perpendicular lines have _______ ________ slopes.

Same

Negative Reciprocal

200

If a line is y = -3/4x - 9:

a) what is the slope of a line parallel 

b) what is the slope of a line perpendicular

a) -3/4

b) 4/3

300

What is the negative reciprocal of 

a) 1 

b) 0

a) -1 

b) undefined

400

Write the equation of a line that goes through the point ( -2, -1) and is PARALLEL to y = 3/5x -2 

y + 1= 3/5 ( x + 2) 

or 

y =3/5x + 1/5 

500

Write the equation of a line IN SLOPE INTERCEPT that is PERPENDICULAR to y= 4x-5 and goes through the point ( 0, -8) 

y= -1/4x - 8

Final Jeopardy

500

 Which two lines are perpendicular?

A. 2x+y=4
B. 2x−y=5
C. x−2y=−6

A and C