In the same way, the x<span>-axis is also the line "y = 0". Then, algebraically, an </span>x-intercept is a point on the graph where y is zero, and. a y-intercept<span> is a point on the graph where </span>x<span> is zero.
Honestly I didn't get it either but I hope this helped ^ ^</span>
Answer:
Step-by-step explanation:
y and 76 are vertically opposite angles
x and z are vertically opposite angles
Linear pairs.
If sum of two adjacent angles are 180, then they are linear pair.
x & 76 are linear pairs
y & z are linear pairs
z & 76 are linear pairs
x and y are linear pairs
Solutions:
y = 76 { vertically opposite angles are equal}
x + 76 = 180 { linear pair}
x = 180 - 76
x = 104
z = x {Vertically opposite angles are equal}
z = 104
To approximate the volume with 8 boxes, we have to split up the interval of integration for each variable into 2 subintervals, [0, 1] and [1, 2]. Each box will have midpoint 
that is one of all the possible 3-tuples with coordinates either 1/2 or 3/2. That is, we're sampling 
at the 8 points,
(1/2, 1/2, 1/2)
(1/2, 1/2, 3/2)
(1/2, 3/2, 1/2)
(3/2, 1/2, 1/2)
(1/2, 3/2, 3/2)
(3/2, 1/2, 3/2)
(3/2, 3/2, 1/2)
(3/2, 3/2, 3/2)
which are captured by the sequence
with each of 
being either 1 or 2.
Then the integral of 
over 
is approximated by the Riemann sum,
(compare to the actual value of about 4.159)
Its simple, graph them.
For the first equation, go on the Y-Axis (the vertical one) and go to 4. Then from there go up 1, right 6.
For the second equation go on the Y-Axis (the vertical one) and plot a point at 1 (aka 0,1) Now you go up 1, right 3.
When you see an equation like y=2x+3, the 3 represents the point (0,3) as when the x is 0, y=3. Just plug the numbers in. And as for the "2x" 2 is the slope. Slope is always rise/run or up, then right. So if its 2 your slope is 2/1, rise 2, over 1. If it "-2x" is your slope then all you have to do is go down 2, right 1.
I hope this cleared up your confusion, brainliest/heart would help.
