Question

HELP!!! a line has a slope of -2/3 and a y-intercept of (0,3).What is the value of y when x=4?

Answer 1

HELP!!!

Answer 2

\[y = mx + b \] where m is the slope and b is the y-intercept
\[y = -2/3(4) + 3\]\[\rightarrow y = \frac{-8}{3} + \frac{9}{3}\]
the 9/3 represents the 3
\[y = \frac{1}{3}\]

Answer 3

do you just plug in a random number then simplify and work from there?

Answer 4

you just plug in the x value. Because it's y = slope (x value) + y-intercept.
You had the slope and the y-intercept, so you just had to plug in the x value and solve for y.

Answer 5

ooooooooooohhhh i get it!!
Thank you!!

Answer 6

cool :) no problem