Answer :

Answer:

y = 2x+3

Step-by-step explanation:

In the equation, y = mx+b, m is the rate of change, and b is the intercept.

ROC can be found by locating 2 points on the graph.

Answer:

y = 2x + 3

Step-by-step explanation:

let's take the two co-ordinates from the blue line given:

x1, y1 = 1, 5

x2, y2 = 3, 9

general equation of the line is, y = mx + c

where:

slope, m = y2 - y1 / x2 - x1

              = 9 - 5 / 3 - 1 = 4/2 = 2

let's take x1, y1 as x, y to find the value of constant c

i.e.

5 = 2(1) + c

c = 5 - 2 = 3

thus,

equation of the blue line is:

y = 2x + 3

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