Write the equation in Point-Slope Form given the Slope is 5 and passes through the Point (-2, 10).

y=5(x+4) or y=5x+20

Step-by-step explanation:

((y-y1)/(x-x1))= ((y2-y1)/(x2-x1))=m

x1= -2, y1= 10, m= 5

((y-10)/(x-(-2))= 5

((y-10)/(x+2))= 5

Cross multiply

5(x+2)= y-10

y= 5x + 10 + 10

y= 5x+20

y=5(x+4)

if x decreases by 4 then y increases by 10

step-by-step explanation:

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: