Question

Two functions, A and B, are described as follows:

Function A
y = 8x + 3

Function B
The rate of change is 1 and the y-intercept is 4.

How much more is the rate of change of function A than the rate of change of function B?

1
7
8
9

Answer 1

@amyhashimoto77

Answer 2

The rate of change is the slope.
Function A slope: 8
Function B slope: 1 [Equation: y = x + 4]

Answer 3

The question confuses me because it say "How much more?" and usually in math they mean add. So 7 more.

But if its asking, "how many TIMES more" than the answer would be 8

Answer 4

so its B?

Answer 5

Well, if this is a one chance only, than I would go with 8.

Answer 6

The length of a rectangle is 7 units and its width is 5 units. What is the approximate length of the diagonal of the rectangle?

4.9 units
6 units
8.6 units
9 units

Answer 7

C

Answer 8

In this one, you split the rectangle diagonally and you end up with 2 triangles.
And then use the pythagorean theorem.
7^2 + 5^2 = c^2
49 + 25 = c^2
74 =c^2
√74 = c
8.6 = c

Answer 9

A cylindrical well is 15 meters deep and has a diameter of 1.6 meters. Approximately how many cubic meters of soil were dug out to make the well? (Use π = 3.14.)

30.14 cubic meters
37.68 cubic meters
120.57 cubic meters
188.40 cubic meters

Answer 10

i think its D but im not sure

Answer 11

You need to find the volume of a cylinder, which is (pi)r^2 x h
The radius is half the diameter. r = 1.6/2 = 0.8
The height is depth of the well. h = 15

Now use the equation:
(3.14)(0.8^2) x (15) = 30.14 m^3

Answer 12

ohhhh ok so that would be A right oh ok

Answer 13

In triangle PQR, r2 = p2 + q2.

Triangle PQR has sides p, q, r opposite to the corresponding vertices P, Q, R

Which equation is true about the measure of the angles of the triangle?

The measure of angle PRQ is equal to 100 degrees
The measure of angle PRQ is equal to 90 degrees
The measure of angle PQR plus the measure of angle QPR is equal to 80 degrees
The measure of angle PQR plus the measure of angle QPR is equal to 70 degrees

Answer 14

B

Answer 15

Two equations are shown:

Equation A
y = −3x − 2

Equation B
y equals 3 over x plus 5

Which statement best compares the graphs of the two equations?

Both are nonlinear.
Both are linear.
Equation A is nonlinear and Equation B is linear.
Equation A is linear and Equation B is nonlinear.

Answer 16

D

Answer 17

can you explain how itsD?

Answer 18

Orio and Ted buy an equal number of comic books every month. The following equation shows the number of comic books, y, that Orio has after x months:

y = 2x + 15

The following graph shows the number of comic books, y, that Ted has after x months:

Graph shows Months on x axis and Number of Comic Books on y axis. The scale on x axis is shown from 0 to 5 at increments of 1. The scale on y axis is shown from 0 to 14 at increments of 2. The title of the graph is Teds Comic Books. A straight line is shown which joins the ordered pair 0, 6 and 4, 14

After 2 months, how many more comic books does Orio have than Ted?

1
2
4
9

Answer 19

Equation A is linear because it's x to the first power
Linear = straight line

Equation B, I'm not too sure how to explain, but I plugged y=(3/x) + 5 into a graphing calculator and got something like this... hold on
And so Equation B not linear.

Answer 20

OK THANK YOU FOR YOUR EXAMPLE (:

Answer 21

Orio and Ted buy an equal number of comic books every month. The following equation shows the number of comic books, y, that Orio has after x months:

y = 2x + 15

The following graph shows the number of comic books, y, that Ted has after x months:

Graph shows Months on x axis and Number of Comic Books on y axis. The scale on x axis is shown from 0 to 5 at increments of 1. The scale on y axis is shown from 0 to 14 at increments of 2. The title of the graph is Teds Comic Books. A straight line is shown which joins the ordered pair 0, 6 and 4, 14

After 2 months, how many more comic books does Orio have than Ted?

1
2
4
9

Answer 22

THE ANSWER CHOICE IS b?

Answer 23

C

Answer 24

@amyhashimoto77 is he correct?

Answer 25

Haha I got D

Answer 26

ok lol

Answer 27

Orio:
y=2x + 15

Ted:
y=2x + 6

y=2(2)+15
y=4+15
y=19
Orio has 19 comics in 2 months

y=2x+6
y=2(2)+6
y=4+6
y=10
Ted has 10 comics in 2 months

SUBTRACT:
19 - 10 = 9!!!