Question

Help me find the equation to go with this graph please i give brainlist

Answer 1

Answer:

Step-by-step explanation:

Step 1: The general equation of straight line is

     y = mx + c

c = initial value

m = rate of change

Step 2: Initial value c = 20

Step 3: Rate of change

m = $\frac{y2 - y1}{x2 - x1}$

Step 4: From the graph, pick two points

x1 = 0, y1 = 20

x2 = 4, y2 = 2

Step 5: By substitution, rate of change m = $\frac{21-20}{4-0}$

m = $\frac{1}{4}$

Step 6: Equation of the graph

y = mx + c

y = $\frac{1}{4}x$ + 20