Finding Slope
Intercepts
Types of Slope
Finding Equations
Graphing
100
The slope of the equation y = -3x + 5.
A. 3 B. -3
C. 5 D. -5
B. -3
100
The y-intercept of the equation y = 7x - 5
A. 7 B. -7
C. 5 D. -5
D. -5
100
The slope of line that goes downhill from left to right
What is negative?
100
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Your team gain 300 points!
100
FIND SLOPE
what is - 1
200
The slope of the equation y = 1/2x + 7.
A. 7 B. -7
C. 1/2 D. -1/2
C. 1/2
200
The x-intercept of the equation 3x - 8y = 24.
A. 3 B. -3
C. 8 D. -8
C. 8
Set y = 0 to find "x"
3x - 8(0) = 24 so 3x = 24 .
then divide both sides by 3 . 3x/3 = 24/3
x = 8
200
The slope of a line that goes uphill from left to right is
What is positive
200
SLOPE - INTERCEPT FORM where B=21
The equation that represents the line containing the points (3, -3) and (2, 5) is
What is y = -8x + 21?
STEP 1: solve for m = -8
STEP 2: substitute x,y,m into y=mx+b to find b
5=-8(2) + b so b = 21
so y = -8x + 21
200
Y-Intercept "b" = 3
Slope "m" = +1
300
The slope of the equation containing the points (2, 5) and (4, 3).
A. 1 B. -1
C. 3 D. 1/3
B. -1
m = (y2-y1)/(x2-x1)
m = (3-5)/(4-2)
m = -2/2 = -1
300
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Your team gain 500 points!
300
The slope of a vertical line is
What is undefined?
300
SLOPE - INTERCEPT FORM . where b =6
The equation that represents the line containing the points (4, 2) and (0, 6) is
What is y = -x + 6?
300
y=-2x + 6
400
Congratulations!!!
Your team gain 300 points!
400
The y-intercept of the equation y + 2 = 3(x - 5).
A. 17 B. -17
C. 3 D. -3
B. -17
substitute 0 for x and solve
y+2 = 3(zero - 5)
y+2 = -15 then subtract 2 from both sides
y = -17 . the coordinate is (0,-17)
400
The slope of a horizontal line is
What is zero?
400
SLOPE - INTERCEPT FORM . where b = -2
The equation that represents the line containing the points (1/2, -7) and (-1/2, 3) is
What is y = -10x - 2?
WATCH NEGATIVE SIGNS
400
y = 6
500
The slope of the line represented by the equation y - 6 = 1/3(x - 3).
A. 1/3 B. -1/3
C. 7 D. -7
A. 1/3
500
The x-intercept of the equation y = 3x - 9
What is 3?
set y = 0 and solve
0 = 3x - 9 . then add 9 to both sides
3x = 9 divide both sides by 3 . 3x/3 = 9/3
x = 3 coordinate point is (3,0)
500
The slope of the line containing the points (3, 9) and (3, 5) is
What is undefined?
500
SLOPE - INTERCEPT FORM where b = -1/2
The equation that represents the line containing the points (1/3, 1/2) and (2/3, 3/2) is
What is y = 3x - 1/2?
500
Unlucky :-(
Your team lose 300 points!