Question

Find an equation of the line through (2,4) and parallel to y=3x-7. Write the equation using function notation.

f(x)=?

Answer 1

parallel lines have same slope

Answer 2

do you know what is slope of this equation y =3x - 7 ??

Answer 3

3x

Answer 4

not 3x
slope is just 3 :)

Answer 5

so like i said before parallel lines have same slope so what is slope of other equation

Answer 6

you mean (2,4)?

Answer 7

does y=3x-7= (3,-7)?

Answer 8

nope you have to find another equation which should parallel of this y =3x-7
so if slope of this equation is 3
then slope of other equation should 3 because lines are parallel

Answer 9

nope new equation should be y = 3x+b
y = m x + b <--- slope intercept form

Answer 10

ahh i forgot about mx+b

Answer 11

now use that order pair and replace x and y by their values (2,4) into y = 3x+b

Answer 12

4=6+b

Answer 13

do i divide all sides by 4?

Answer 14

looks good solve for b

Answer 15

nope 6 + b 6 is adding with b
so do opposite

Answer 16

opposite of add is ??

Answer 17

subtract

Answer 18

yes so subtract 6 both side

Answer 19

-2=b

Answer 20

or b=-2

Answer 21

yes now y = mx+b
replace m and b by their values

Answer 22

4=3(2)-2?

Answer 23

f(x)=3x-2 ??

Answer 24

^^^this one

Answer 25

so thats the correct one?

Answer 26

yes f(x)=3x-2 :)

Answer 27

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Answer 28

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