Question

Algebra help please??

Answer 1

1. ?
2 & 3
Remember that the slope-intercept is y = mx + b, where y is the y-value, m is the slope, x is the x-value, and b is the y-intercept.

Answer 2

Let me give you a little lesson on basic algebra.

Graphs of curves are complicated, but ines are easy to see and work on. Lines all have equations that look like y = mx+b. Where m is the slope (rise over run) and b is the y-intercept (the point where the line intersects the y axis).

Answer 3

-2 & 4 as answers??

Answer 4

-2 is a yes, but in question 3 you have to subtract 4x from both sides so that the equation has x on the right hand side. So it becomes -4x.

Answer 5

What would the first one?

Answer 6

For the first one the answer is (3, -16 1/4)
To get that answer, you must plug in each pair of coordinates until the left hand side equals the right hand side of the equals sign.

Answer 7

can you help with some more?

Answer 8

sure, happy to help :-D

Answer 9

I took the answers to your problem and graphed them to show you what each answer looks like on the x-y plane.

Answer 10

You are looking for all lines that have a negative slope. Can you find at least 1 on my graph?

Answer 11

Y & X?

Answer 12

:-P

Answer 13

C & D as answers?

Answer 14

nope, x and y are the labels for the two lines that define the x-y plane.
D slopes down and therefore has a negative slope, but C slopes upward.

Answer 15

What other line slopes down?

Answer 16

Would it be D & A?

Answer 17

Yes!

Answer 18

C?

Answer 19

no, not C

Answer 20

look carefully at A

Answer 21

It has a slope of 1/3 and a y-intercept of 8

Answer 22

ould it be A than?

Answer 23

yes

Answer 24

very good

Answer 25

What is the y-intercept of the line that you want to find?

Answer 26

C?

Answer 27

Can you answer my y-intercept question first?

Answer 28

Sorry! Would it be -7?

Answer 29

Very good! Now B and D are lines that cross the y axis at -7, which one (B or D) has a line with a slope of 2?

Answer 30

B?

Answer 31

Let me explain a little further, just pick a point on the line and count how many squares over and up it goes from one whole number box to the next.

Answer 32

B goes up 1 and over 2. D goes over 2 and up 1.

Answer 33

Oh okay i got it!

Answer 34

Ok, scatter plots are fancy, but not too difficult. If I told you that x is the price and y is the number of hamburgers sold and that the point is in (x, y) format, what answer would you choose. Remember that x is the price and y is the number of hamburgers sold, not the increase in hamburgers sold.