Question

Choose the system of equations which matches the following graph.

Answer 1

x + 2y = −10
3x − y = 12

x − 2y = −10
3x − y = 12

x + 2y = −10
3x + y = 12

x − 2y = −10
3x + y = 12
@ganeshie8

Answer 2

look at the lines. one line is falling down. other line is rising up.

Answer 3

so you can strike off two options straight away. what are they ?

Answer 4

i can take B and C out ?

Answer 5

wonderful !

Answer 6

Its A!

Answer 7

right ?

Answer 8

correct ! fantastic work !!

Answer 9

Another quick way to check these is by taking advantage of the intercepts. For the line sloping mid-left to lower right, you have x = 0, y = -5. Plug a 0 for x into the equations, which one is true if y = -5? The very first one. Now the other line: 4,0 is an intercept, so which equation is true if x=4 and y = 0? Again, easy to see that 3x-y=12 is the right one.