find the value of $f(4)$. $y = f(x)$
find the value of $f(4)$. $y = f(x)$
Answer
Explanation:
Step1: Find the equation of the right - hand line
The right - hand line passes through the points ((0,7)) and ((7,0)). The slope (m=\frac{y_2 - y_1}{x_2 - x_1}=\frac{0 - 7}{7 - 0}=- 1). Using the point - slope form (y - y_1=m(x - x_1)) with ((x_1,y_1)=(0,7)), the equation is (y=-x + 7).
Step2: Substitute (x = 4) into the equation
When (x = 4), (y=-4 + 7).
Answer:
(3)