Question

Given the graph below write the equation of the line.

y = 2 + 2
y = -2x
y = 2x + 8
y = 0x + 8

Answer 1

y=2+2, y=-2x, y=2x+8, and y=0x+8
2x+8

Answer 2

y = 2x+8

Explanation:

The equation should be in the form of y=mx+b

So you already know it's not A. Also you already know it's not D because the line goes at an angle, if "m"(slope) was 0 then the line would be straight horizontal or straight vertical. So that leaves B and C. And finally you know it's not B because the line is going in the positive direction not negative, so the slope has to be positive, also "b" in the equation is the y-intercept, and that's where the line intersects with the y-axis, and you can see that the line intersects at 8 on the graph. Therefore, the answer is C, y=2x+8

Hope this helps!! :)