Maths-

General

Easy

Question

# Write a function in the form Y = mx + b for the line that contains the points (-8.3, -5.2) and (6.4, 9.5)

Hint:

### Use two – point form

## The correct answer is: y = x + 3.1

### The two points given are (- 8.3 , - 5.2) and (6.4 , 9.5)

Using two – point form, equation of the line is

(y – y_{1}) = m (x – x_{1}) where m =

m =

= = 1

Now, equation of the line is (y – y_{1}) = m (x – x_{1})

(y – 9.5) = 1 (x – 6.4)

y – 9.5 = x – 6.4

y = x – 6.4 + 9.5

y = x + 3.1

Now, equation of the line is (y – y

_{1}) = m (x – x

_{1})

(y – 9.5) = 1 (x – 6.4)

y – 9.5 = x – 6.4

y = x – 6.4 + 9.5

y = x + 3.1

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