Answer:
x = 12
y = 4
Explanation:
Part B
Gradient
Gradient = (y2 - y1) / (x2 - x1)
Gradient = (6 - 3) / (10 - 4)
Gradient = 0.5
Line of equation
y - y1 = m (x - x1)
y - 3 = 0.5 (x - 4)
y - 3 = 0.5x - 2
y = 0.5x - 2 + 3
y = 0.5x + 1
f(x) = mx + b ---> f(x) = 0.5x + 1
m = 0.5
b = 1
Part A
x = 12
y = 4
(Put the values of the graph in the line of equation)
I hope my answer helps you.