Question

Ben is eating some pretzels and an entire small package of mustard as a snack. Based on the graph below, which equation represents the relationship between the number of pretzels the ben eats, x, and the total amount of sodium in his snack, y?

y=15x+65
y=80x+65
y=65x+80
y=65x+15

Answer 1

y=15x+65

Explanation:

Answer 2

Answer: y=15x+65

Explanation:

First, select two points in the graph, we can choose the points (x,y) as:

(1, 80) and (5, 140)

Then we can find the slope as:

s = (y2 - y1)/(x2 - x1)

s = (140 - 80)/(5 - 1) = 15

Then we have a function:

y = 15*x + b

and we know that when x = 1, y = 80, then:

80 = 15*1 + b

b = 80 - 15 = 65

the equation is y=15x+65