Eliza’s puppy weighed 22 Kilograms at 12 months of age. This is a 120% gain from its weight at 6 months. Eliza used these steps to find the puppy’s weight at six months, but made an error. Step 1. Let x represent the puppy’s weight at six months.
Step 2. x + 120/100 = 22
Step 3. x + 1.2 = 22
Step 4. x = 22 - 1.2

Part A
(1) in which step did Eliza make an error?
Answer

(2) Explain what Eliza did wrong in the step where an error occurred.

Part B
What was the puppy’s actual weight at 6 month? Show your work.
Answer. Kg

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)