Trinomials
x2+5x+6
What is (x+2)(x+3)?
A line has a slope of 3 and a y-intercept of 2.
What is the equation of the line in slope-intercept form?
y=3x+2
A z-score of 0 means the data values is exactly equal to this statistical mearuse
What is the mean?
Simplify sqrt(72)
6 (radical 2)
x2-25/x-5
x+5
3x2-12x+9
What is 3?
Find the slope of the line that passes through the points (1,4)(1, 4)(1,4) and (5,12)(5, 12)(5,12).
What is the slope?
m=12−4/5-1=2
This is what a positive z-score tells you about a date point's position relative to the mean.
What is above the mean?
Simplify -3 sqrt(50)
-15(radical 2)
6x2/3x
2x
x2-10x+25
What is (x-5)2?
A line passes through the point (2,−1)(2, -1)(2,−1) and has a slope of −32-\frac{3}{2}−23.
What is the equation of the line in slope-intercept form?
Start with point-slope form:
y+1=−32(x−2)y + 1 = -\frac{3}{2}(x - 2)y+1=−23(x−2)
Simplify:
y=−32x+2y = -\frac{3}{2}x + 2y=−23x+2
THs is the formula used to calculate a z-score.
What is z=
Simplify 4 (radical 27) + 2 (radical 12)
16 (radical 3)
x/x+2 ⋅ x+2/4
x/4
2x2+7x+3
What is (2x+1)(x+3)?
A line has a slope of 4 and a y-intercept of -3.
What is the equation of the line in slope-intercept form?
y=4x−3
In a standard normal distribution, approximately this percentage of data falls between a z-score of -1 and 1.
What is 68%?
Simplify 5 radical 3 + 2 radical 3
7 radical 3
x2-16/x+1 ÷ x-4/x+1
x+4
x2+7x+12
(x+3)(x+4)
A line passes through the points (0,2)(0, 2)(0,2) and (3,11)(3, 11)(3,11).
What is the equation of the line in slope-intercept form?
Slope: m=(11−2)/(3-0)=3
Equation: y=3x+2
A dataset has a mean of 50 and a standard deviation of 5. This is the z-score for a data of 37.5.
What is -2.5?
Simplify 7 radical 8 - 3 radical 18
5 radical 2
2/x+5/x
7/x