I'm assuming you are finding the equation of the line of Line J
Slope-intercept form: y = mx + b
[m is the slope, b is the y-intercept or the y value when x = 0 --> (0, y) or the point where the line crosses through the y-axis]
For lines to be perpendicular, the slopes have to be negative reciprocals of each other. (basically changing the sign (+/-) and flipping the fraction/switching the numerator and the denominator)
For example:
slope = 2 or 
Perpendicular line's slope = 
[changed sign from + to -, and flipped the fraction]
slope = 
Perpendicular line's slope = 
[changed sign from - to +, and flipped the fraction]
Since you know the slope is 3, the perpendicular line's slope is 
. Plug this into the equation
y = mx + b
To find b, plug in the point (3, 8)
8 = -1 + b Add 1 on both sides to get "b" by itself
8 + 1 = -1 + 1 + b
9 = b
Answer:
x=5.5
Step-by-step explanation:
2x-1=10
+1 +1
2x=11
divide by 2 on each side
x=5.5
Answer:
i made it going by 2's as it's easier and quicker and more efficient. sorry for the messy hand writing.
Given that the<span> iq scores for large populations are centered at 100.
To get what percent of these 78 students have scores above 100 we conduct a normal distribution probability of the data.
P(x > 100) = P(z > (100 - 100)/sd) = P(z > 0) = 1 - P(z < 0) = 1 - 0.5 = 0.5 = 50%
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True, because (x) times one is always going to be (x).
So, this will be
1.2(1) + 3.6(1) =4.8
