Question

Graph by using the slope and the y intercept.

Answer 1

1. a) equation of the line :

• 
  `y = (2)/(5)x - 7`

y - intercept = -7

so, it will pass through point (0, -7)

and if we plug the value of x as 5, we get

• 
  `y = ((2)/(5) * 5) - 7`

• 
  `y = 2 - 7`

• 
  `= - 5`

so, it will pass through point (5, -5) too

now, just plot the points (0 , -7) and (5 , -5) and join them.

2. b) equation of line is :

• 
  `y = - 3x + 5`

here, y - intercept = 5

so the line passes through point (0 , 5)

now, Plugging the value of x = 1 we get :

• 
  `y =( - 3 * 1) + 5`

• 
  `y = - 3 + 5`

• 
  `y = 2`

so, the given line passes through point (1 , 2)

plotting the points, we can get our required line.