Question

read the instructions first answer the questions that follow​

Answer 1

Answer:

answer for the given problem is given

Answer 2

❥︎If we look at the graph carefully, we found that line passes through (0, 4) and (2, 1) respectively.

So, equation of line is given by

$\bf \:y - y_1 = \dfrac{y_2-y_1}{x_2-x_1} (x-x_1)$

❥︎On substituting the values, we get

$\bf \:y - 4= \dfrac{1 - 4}{2 - 0} (x-0)$

$\bf\implies \:2y - 8 = - 3x$

$\bf\implies \:2y = - 3x + 8$

$\bf\implies \:y = - \dfrac{3}{2} x + 4....(1)$

❥︎Answer :- 1.

Amount of gasoline after 1 hour,

Put x = 1 in above equation (1), we get

y = - 1.5 + 4 = 2.5 litres.

❥︎Answer :- 2

The constant decrease in gasoline per hour is 1.5 litres.

❥︎Answer :- 3

To get after how much hours gasoline is required,

put y = 0, in above equation (1), we get

0 = - 1.5x + 4

4 = 1.5x

x = 2.67 hours approx.

❥︎Answer:- 4

The above equation (1)