Question

1) State with reason whether the equation 32− 7y = 13 is a linear
equation with two variables?
2) Show the condition using variable x and y: Two numbers differ by 3
3) For the equation 4x + 5y = 20 find y when x = 0
4) Write any two solutions of the equation x + y = 7.
5) Decide whether (0, 2) is the solution of the equation 5x + 3y = 6
6) Write any two solution of the equation a – b = - 3
7) If x+2y=5 and 2x+y=7 then find the value of x+y
8) If Dx = 24 and x = - 3 then find the value of D.
9) The cost of the book is 5 rupees more than twice the cost of a pen. Show
this using linear equation by taking Cost of book(x) and cost of a pen(y).

Answer 1

Step-by-step explanation:

Specific heat, ratio of the quantity of heat required to raise the temperature of a body one degree to that required to raise the temperature of an equal mass of water one degree.