Choose the equation that represents the graph below.
Graph of a line passing through points negative 2 comma 0 and 0 comma negative 4

y = -2x - 4
y = 2x + 4
y = -2x + 4
y = 2x - 4

Question

Choose the equation that represents the graph below.
Graph of a line passing through points negative 2 comma 0 and 0 comma negative 4
 	
	y = -2x - 4
	y = 2x + 4
	y = -2x + 4
	y = 2x - 4

vjt · Answer

attachment

anonymous · Answer

y=mx+b. Where m=slope and b=y-intercept.

First you need to find the slope. Use this
$$m=\frac{ y2-y1 }{ x2-21 }$$

anonymous · Answer

After you've found the slope. Just substitute a coordinate into the equation and solve for b. Once you have the values of m and b. You can then create the equation for the graph.

vjt · Answer

can you give more details i dont understand this stuff at all

vjt · Answer

@SithsAndGiggles

vjt · Answer

@CGGURUMANJUNATH

anonymous · Answer

Use the points that they gave you. (-2,0) and (0,-4)

m= 0+4/-2-0
m= 4/-2
m= -2.

-2 is the slope.

so now you have y=2x+b.
Solve for b using one of the points. The points are in the form of (x,y).

y=2x+b
0=2(-2)+b
0=-4+b
4=b. So for y=mx+b. 

You have m=2 and b=4. Therefore the equation is y=2x+4

vjt · Answer

thanks