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From a Graph
Jack and Jill...slope
Is it enough? If not, what do you need?
2-points
Solve for x
100
The slope is 5 and the y-intercept is -2
What is y = 5x - 2?
100
Up 5, right 1
What is 5?
100
You have the slope.
No - What is a point or an intercept?
100
(1, 0) (3, 0)
What is y = 0?
100
x + 8 = 10
What is x = 2?
200
The line goes up 3 for every 1 it goes over and it crosses the y-axis at 2.
What is y = 3x + 2?
200
right 4, up 2
What is 1/2?
200
You have 1 point.
No - What is the slope or another point?
200
(4, 6) (1, 3)
What is y = x + 2?
200
6x = 12
What is x = 2?
300
The line goes down 4 for every 2 it goes over and it crosses at the origin.
What is y = -2x?
300
left 2 down 6
What is 3?
300
You have the slope and 1 point.
What is don't need anything.
300
(8. 4) and (6,6)
What is y = -x + 12?
300
2x + 4 = 16
What is x = 6?
400
The line goes up 8 for every 3 it goes over and it crosses the y-axis at 10.
What is y = (8/3)x + 10?
400
up 10, right 15
What is 2/3?
400
You have a table.
What is don't need anything.
400
(4, 5) and (8, 8)
What is y = (3/4)x + 2?
400
3x -5 = -29
What is x = -8?
500
The line goes up 6 for every 3 it goes LEFT. It contains the point (0,4).
What is y = -2x + 4?
500
Contains the points (4, 2) and (6, 2).
What is zero?
500
You have the point (0,0)
What is slope or another point?
500
(-2, -4) and (2, -10)
What is y = (-3/2)x - 7?
500
3(x+7) -5 = 4
What is x = -4?