The equation of a line is y = mx + b. Calculate the slope (m) from the 2 points.
m = (-2-2)/(-4-4) = -4/-8 = 1/2
We could stop here as only one answer has a slope of 1/2, namely A). But if you wanted to show that the y-intercept (b) was 0, you could use either of the points and substitute it into the equation of the line and solve for b.
(-4,-2):
-2 = 1/2(-4) + b
-2 = -2 + b
0 = b
(4,2):
2 = 1/2(4) + b
2 = 2 + b
0 = b
8 is the hundreds place
look at the next smallest place
the tens place
if it is less than 5, round down (leave the hundreds as is and put zeros after it to replace the other digits)
if it is equal to or greater than 0, round up, add 1 to the hundreds
so
829
2<5 so round down
800 is rounded to nearest hundred
16 - 4 x (3 + 7)
16 - 4 x (10)
12 x (10)
120
No question? How shall i answer