Identify the x and y intercepts for the equation 4x – 3y = 12.

Question

amistre64 · Answer

given ax+by=c

xint = c/a

yint = c/b

anonymous · Answer

Sub x = 0 for y intercept
Sub y = 0 for x intercept 

Solve individually.

anonymous · Answer

wat jethro said, thats wat i always do

anonymous · Answer

The line crosses the x-axis when the y coordinate is 0 and the line crosses the y-axis when the x coordinate is zero.

This leads to equations
$$4x – 3\cdot0 = 12$$
and
$$4\cdot0 – 3y = 12$$

Remember that when asked for intersection points you need x and y coordinates, not just the plain answer you got from the equation.

anonymous · Answer

tru

anonymous · Answer

can someone give me the full answer

anonymous · Answer

$$4x–3⋅0=12$$$$4x=12$$$$x=3$$This is the y intercept.

$$4⋅0–3y=12$$$$-3y=12$$$$y=-4$$This is the x intercept.

The point where the line crosses the x-axis is (3,0). The point where the line crosses the y-axis is (0,-4).

amistre64 · Answer

you typoed it up; swap out "xint" for "yint"

anonymous · Answer

Ah, so the y intercept didn't mean the x coordinate where the line crosses the x-axis? Sorry, haven't used this concept in English that much before. :)