Solve 2x^2 + 6x = 36 by graphing the related function.
2 answers:
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Answer:
f(x) = 5x - 5
Step-by-step explanation:
Let the equation of the linear function is,
f(x) = mx + b
Here, m = Slope of the graph
b = y-intercept
Slope of the line passing through and
is given by,
m =
From the table attached,
Slope of the line passing through (2, 5) and (6, 25) will be,
m =
m = 5
Equation of the linear function will be,
f(x) = 5x + b
Since, a point (10, 45) lies on the function,
45 = 5(10) + b
b = 45 - 50
b = -5
Equation of the linear function will be,
f(x) = 5x - 5