Question

1. Write the slope intercept form of the equation of the line that passes through (4,2) with a slope of 3.

2. When graphing a point for (-1,4) you would
- move 1 right and 4 down
- move 1 right and 4 up
- move 1 left and 4 up
- move 1 left and 4 down

Answer 1

use this equation f(x)-f(a)=k(x-a)

Answer 2

k=3 a=4 and f(a)=2

Answer 3

so you should get f(x)=3(x-4)+2

Answer 4

you can distribute that 3 into the parenthesis or leave it as is, doesn't really matter

Answer 5

the answer choices I have are:
- y = 3x + 4
- y = 4x + 3
- y = 2 = 3 ( x - 4)
- y = 3x - 10
@jrn1007

Answer 6

that last one

Answer 7

@jrn1007 thanks :) and can you help me with the other question too?

Answer 8

sure

Answer 9

when graphing you would move to the right 1 and up 4

Answer 10

@jrn1007 which of the following is the equation of the vertical line that passes through (4,6)?
- x = 4
- y = 6
- y = 4
= x = 6

When graphing a point for (-1,4), you would:
- move 1 right and 4 down
- move 1 right and 4 up
- move 1 left and 4 up
- move 1 left and 4 down

Answer 11

it is x=4

Answer 12

notice they said vertical line so the only x value you have is point on the axis where the vertical line passes through

Answer 13

@jrn1007 thank you so much by the way you are saving my life! my teacher always hands out these really complicated assignment sheets and never explains :)

Answer 14

so the answer is move 1 left and 4 up? @jrn1007

Answer 15

sure fan me and i'll fan you, hit me up anytime you need help... I can help all the way up through multi var calc

Answer 16

thanks :) ! and the answer to the last question is "move 1 left and 4 up"? @jrn1007

Answer 17

yes left 1 and up 4

Answer 18

@jrn1007 can i ask two last questions?

Answer 19

sure

Answer 20

1. What is the range of this set of ordered pairs? {(5,2), (-5,0),(6,2),(2,7)}
- {0, 2, 7}
- {-5,0,2,5,6,7}
- {-5,2,5,6}
@jrn1007

Answer 21

best way to do this is create a simple x,y plane, and plot the 4 points. then look only at the y values of those points. hold one sec while i do this.

Answer 22

its the first one, (0,2,7)

Answer 23

@jrn1007 ok thanks so much for all your help!

Answer 24

when you have an ordered pair such as (a,b) where a and b are numbers the a corresponds to x values and b corresponds to the y values. so domain entails only looking at x-values and range entails only looking at the y-values. You're welcome!

Answer 25

@jrn1007 sorry but I was just doing my homework and I found another problem I don't really understand

Which of the following is the equation for the horizontal line that passes through (-1, -3)?
- x= -1
- x = -3
- y - -3
- y = -1

Answer 26

ok cool, notice that it says horizontal line, so there should be only ONE value of y and a whole domain of x's. so we would need one y value and that's the one they gave us. so y=-3 is our horizontal line

Answer 27

@jrn1007 thanks!

Answer 28

no prob! oh and if you ever need an equation for a vertical line it should be only ONE value of x and a whole range of y's, sort of the opposite. so our vertical line would be something like x=whatever number