Find the value of r so that the line that passes
through each pair of points has the given slope. (6, r), (3, 3), m= 2

The value of r is 9

Step-by-step explanation:

- The slope of a line whose endpoints are and

is

- A line passes through points (6 , r) and (3 , 3)

- The slope of the line is m = 3

- We need to find the value of r

- Let and

- Let and

∵ m = 2

- Substitute these values in the rule of the slope

∴

∴

- Multiply both sides by -3

∴ - 6 = 3 - r

- Add r to both sides

∴ r - 6 = 3

- Add 6 to both sides

∴ r = 9

* The value of r is 9

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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