Question

Please help me with this question, Its the last one and i don't understand what i have to do

Assume a 115 pound person burns 36 calories after 12 minutes of walking and 54 calories after 18 minutes of walking.
Part 1 (2 points): Use calories as the y-coordinate and minutes as the x-coordinate. After writing two ordered pairs, find the slope. What does the slope represent in terms of the information provided?

Part 2 (2 points): Write an equation, in slope intercept form, to represent this data.

Answer 1

Part 3 (2 points): How many calories will this person burn after 35 minutes of walking? Using

Answer 2

a)
The coordinates of the pairs are (12, 36) and (18, 54).
Slope (Gradient) = (54 - 36) / (18 - 12) = 18 / 6 = 3
It represents that for every minute the person walks, he/she loses 3 calories.

b)
Using (12 , 36):
y = 36 + 3(x - 12) = 36 + 3x - 36 = 3x

c)
x = 35 minutes
y = 3(35) = 105 calories

Answer 3

Thank you very much!!!!!:), but how did you did it im so confused and I want to learn.. Any main tips??

Answer 4

On what topic?

Answer 5

On linear graphs,
Remember the formulas,
y = y1 + m(x - x1) where m is the slope or gradient of the line and (x1 , y1) is a point on the line.
y = mx + c where m is the slope or gradient of the line and c is the y-intercept, which means the y-coordinate where the line intersects the y-axis.
(y2 - y1) / (x2 - x1) = m, which is the slope or gradient, and (x1 , y1), (x2 ,y2) are 2 different points on the line.

Answer 6

Thank you very much!!!!!!!!