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Identifying Linear Functions
Using Intercepts
Slope
Solving Systems
Point Slope form &Slopes of lines
100

What is a function whose graph forms a straight line called?

linear function

100
What is the x-coordinate of the point where the graph intersects the x axis called?
What is the x intercept
100
What is the slope of a horizontal line?
Zero
100

Solve the system using elimination:

x - y = 11

2x + y = 19

(10,-1)

100
Write the linear equation in point slope form: Slope=-7 ; (4,2)
y-2 = -7(x -4)
200

What is the standard form of a linear equation?

Ax+By=C

200
Find the x intercept: 2x- 4y=8
x=4
200
What is the slope of a vertical line?
Undefined
200

Solve the system using elimination:

-6x + 6y = 6

-6x + 3y = -12

(5, 6)

200
What lines have the same slope?
parallel
300

Tell whether the function is linear and turn it into standard form of linear equation: y=x+3

Yes can be written as -x+y=3

300
Find the x and y intercepts of 3x+4y=24
x=8 and y=6
300
Find the slope of (4,-2) and(-1,2)
What is -4/5
300

Solve the system using Substitution: 

-4x + 9y = 9

x=3y-6 

(-21, -5)

300
How do you know when you have perpendicular slopes?
When the product of the slopes equal -1
400
Tell whether the set of ordered pairs satisfies a linear function. Explain (2,4), (5,3) (8,2), (11,1)
Yes, constant change in 3 for x. Constant change of -1 in y
400
Find the x and y intercepts of 3x- 2y=12
x=4 and y=-6
400
What is slope intercept form?
y=mx+b
400

Solve using Substitution: 

y= -5x + 9

10x - 7y = -18

(1, 4)


400
Write this equation in point slope form & in slope intercept form: slope=-4, (-1,-2)
Point slope form: y+2= -4(x+1) Slope intercept: y=-4x -6
500
Tell whether the function is linear and graph the function
Yes it is linear.
500
Find the x and y intercepts of 2x + 4y=8. Then graph it
x=4 and y=-2
500
Write the equation in slope intercept form and graph: 3x+2y=8
y=-3/2+4 See graph
500

Solve using any method:

y = x-11

y=2x + 19

(-30, -41)

500
Write the equation in point slope form and in slope intercept form: (1,-4) and (3,2)
Point slope: y-2=3 (x-3) slope intercept: y=3x -7