Question

(b) problem 17: (first taught in lesson 43)
find y.
16
4y - 6
18

Explanation:

Step1: Assume it's an isosceles triangle

Since no other information is given, assume the triangle has two equal - length sides. Let's assume $16=4y - 6$.

Step2: Solve the equation for y

Add 6 to both sides of the equation: $16 + 6=4y-6 + 6$, which simplifies to $22 = 4y$. Then divide both sides by 4: $y=\frac{22}{4}=5.5$.

Answer:

$y = 5.5$