Question

2. Find the equation of the line in the graph and mathematically model the scenario using function notation where cost is a function of number of minutes.

Answer 1

Your line has coordinates (0,300) and (450,0)

The equation of the line requires slope.

The slope of the line is (0-300)/(450-0) = -300/450 = -2/3

So now you write the equation of the line whose slope is - 2/3 and passing through the points (0,300) and (450,0).

Answer 2

You do it. Look what I did in the other problem and do the same for the new graph.

Answer 3

(0, 20) (700, 55)

m=y2-y1/x2-x1

m= 55-20/700-0
m=35/700
m=1/20

y=(1/20)+b

Answer 4

@Loser66

Answer 5

to me, I choose 2 specific points (0, 20) and (400, 40)
so \(\dfrac {y-y_0}{x -x_0}=\dfrac{40-20}{400-0}=\dfrac{20}{400}=\dfrac{1}{20}\)that is the slope m of the line
then plug that slope into the formula of the line that is \(y -y_0 = m (x -x_0)\) again, I choose the point (0,20) as \((x_0, y_0) \) to plug in it
so, I have y - 20 = \(\dfrac{1}{20}\) (x -0)
y = \(\dfrac{ 1}{20}x +20\) that is the equation of the given line

Answer 6

eh
Im on the same question

Answer 7

Good luck @ninjabearsnowman