As the there is a linear relationship in the points, so all these points will be on a single straight line. Hence the slope will be same throughout all the points.

We know that, the slope of the line joining (x₁, y₁) and (x₂, y₂) is,

$m=\dfrac{y_2-y_1}{x_2-x_1}$

Putting the points as (-1, 10) and (1, 9), we get

$m=\dfrac{9-10}{1-(-1)}$

$=\dfrac{9-10}{1+1}$

$=\dfrac{-1}{2}$

Rate of change is the slope of the line joining all these points.

7 0

3 years ago

Read 2 more answers

Evaluate x² + 4x + 1 when x = -3

Masteriza [31]

Substitute -3 to x

(-3)^2 + 4(-3) + 1

9 - 12 + 1

= -2

3 0

1 year ago

Read 2 more answers

Calculate the missing angle and give a reason for your answer

Vanyuwa [196]

Step-by-step explanation:

the triangle is an isosceles triangle hence the base angles are equal

sum of angles in a triangle is 180°, therefore, the top angle =180-(62+62)

the top angle =56°

h°= the top angle because alternate angles are equal

hence, h=56°

5 0

2 years ago

Read 2 more answers

the greatest value of x and y so that an even number of the phone to x y 6x divisible by both 3 and 5​

the greatest value of x and y so that an even number of the phone to x y 6x divisible by both 3 and 5