Question

If a line crosses the y-axis at (0, -3) and has a slope of 3, what is the equation of the line?

Answer 1

use this formula to find the equation\[y=mx+c\]where\[y=vertical~axis\]\[x=horizontal~axis\]\[m=slope\]\[c=y-intercept\]

Answer 2

u have the value of x and the value of y and also the slope

Answer 3

substitute the value inot the formula to find the equation

Answer 4

into*

Answer 5

\[y=-3\]\[x=0\]\[m=3\]\[c=?\]

Answer 6

\[y=mx+\color{red}{c}\] substitute the value to find c

Answer 7

\[-3=3(0)+c\]

Answer 8

so it would be 3x+y=3?

Answer 9

how do u get that?

Answer 10

its one of my options on my paper

Answer 11

well u hv the value for x,where x=0 and the value of y,where y=-3 and also the slope,m=3 sbstitute this into\[y=mx+c\]to find the value of c

Answer 12

\[(0,-3)=(x,y)\]\[m=3\]

Answer 13

\[-3=3(0)+c\]

Answer 14

what is the value for 3 multiply by 0?

Answer 15

3x-y=3

Answer 16

correct!

Answer 17

Thank you :)

Answer 18

yw ^_^

Answer 19

Btw,\[\huge{Welcome~To~OpenStudy}\] @kweb2017

Answer 20

thank you :)))))

Answer 21

np ^_^