y = 25x + 50
$50 is a constant, whereas $25 is the daily rate and will vary
let x be the number of days rented, then
y = 25x + 50 ← in slope-intercept form
Answer:
y=2x+3 is non-proportional. y=5x is proportional.
Step-by-step explanation:
y=2x+3 is not proportional because there is the +3. also, when it is graphed on a graph, the line does not pass through the origin/zero.
y=5x is proportional because it does not have any other values attached to the y value. when it is graphed, the lie goes through the origin/zero.
X / 8 = 3.75
X = 3.75 * 8
X = 30
Percent of Change:
Difference/Original
(20-16)/16 = 4/16 = 1/4 = 25% increase