Question

can smo reply asap? solve by graphing: {x + 4y = -8 3x - 2y = 18

Answer 1

pls show steps to how u got the answer. ty.

Answer 2

both equations are in standard form, so it may be easier to use intercepts

let's start with the first equation:

x + 4y = -8

if we plug in x = 0, we get 4y = -8, or solving for y, y = -2. this means the y-intercept is (0,-2)

if we plug in y = 0, we get x = -8. this means the x-intercept is (-8.0)

this means this equation has points (0,-2) and (-8,0). you can plot these two points, and draw the line that goes through them.

repeat this process with the second equation. the solution will be the point where the two lines intersect.

Answer 3

@Vocaloid ty

Answer 4

@Vocaloid i got points (6,0) and (0,-9) for the second equation and the two lines intersect at (0,-2) is this correct? i typed the equations into the desmos graphing calculator n it said the two lines intersect at (4,-3). i'm confused

Answer 5

can I see your graph? your numbers are correct, perhaps there is some error in how you drew the lines.

Answer 6

okay

Answer 7

you haven't drawn the second function yet. if you connect (6,0) and (0,-9) you'll get a second line. the two lines will intersect at about (4,-3)

Answer 8

@Vocaloid ty