Question

Graph the equation by plotting three points. If all three are correct, the line will appear. -4y = -5x – 18

Answer 1

$\\ \sf\longmapsto -4y=-5x-18$

$\\ \sf\longmapsto y=\dfrac{-5x-18}{-4}$

$\\ \sf\longmapsto y=\dfrac{5x+18}{4}$

Now

Case-1

• x=2

$\\ \sf\longmapsto y=\dfrac{5(2)+18}{4}=\dfrac{28}{4}=7$

• Co-ordinates are (2,7)

Case-2

• x=-2

$\\ \sf\longmapsto y=\dfrac{5(-2)+18}{4}=\dfrac{8}{4}=2$

• (-2,2)

Case-3

• x=6

$\\ \sf\longmapsto y=\dfrac{5(6)+18}{4}=\dfrac{48}{4}=12$

• (6,12)