Find the slope and y-intercept for the line x – y = 4.
y= mx + b
m is the slope
b is the intercept
x - y = 4
x - y + y = 4 + y
x = 4 + y
x - 4 = 4 + y - 4
x - 4 = y
slope = 1
intercept = -4
Teacher comment:
Minus 1 because an intercept is a POINT, not a number. Minus 1 for no solution checks. Check your intercept.
2006-09-22 14:38:28 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Yes the intercept is a point, so technically you should either say:
the y-intercept = 4 OR
the intercept is at (0, -4)
2006-09-22 14:41:47 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Your teacher is indicating that you should state the intercept as a coordinate on the Cartesian Plane (a point in the (x,y) format)
So you should have said, y-intercept is (0, -4).
2006-09-22 14:41:42 · answer #2 · answered by whatthe 3 · 0⤊ 0⤋
the y-intercept = 4 OR
the intercept is at (0, -
2006-09-22 14:43:46 · answer #3 · answered by BIG WILLIE THE GEORGIA TITIAN 4 · 0⤊ 0⤋
hes a good teacher, lol
u suppose to say y-intercept not intercept
i think ur just making up this question.
maybe ur the teacher.
2006-09-22 14:42:39 · answer #4 · answered by Anonymous · 0⤊ 0⤋
It's Friday night! Give me a break!
2006-09-22 14:42:37 · answer #5 · answered by ebonyruffles 6 · 0⤊ 0⤋