Find the gradient of the blue line

To calculate the gradient of a straight line we choose two points on the line itself.  From these two points we calculate:

If the answer is a positive value then the line is uphill in direction.  If the answer is a negative value then the line is downhill in direction.

Two points of the graph are (0, 1) and (8, 3). Therefore:

Gradient = (3-1) ÷ (8-0)

Gradient = 2 ÷  8

The answer is a positive value so the line is in uphill in direction.

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

multiplication is multiplication.   it might feel harder depending on what level of math you are in, but generally it will be the same old stuff, while implementing some new concepts and methods of solving work.