Complete the point-slope equation of the line through (0, -1) and (1, 2)

OR

Step-by-step explanation:

Hi there!

Point-slope form: where m is the slope and is a point

1) Determine the slope (m)

where two points that fall on the line are and

Plug in the points (0,-1) and (1,2):

Therefore, the slope of the line is 3. Plug this into :

2) Plug a point into the equation

Because we're given two points, there are two ways we can write the equation:

OR

I hope this helps!

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation: