1. Name the point where the graph of x + y = 3 crosses the x-axis.
A. (0, 3)
B. (0, 4)
C. (3, 0)
D. (4, 0)
2.The sum of 4 times one whole number and 2 times another whole number is 6. Which pair of coordinates satisfy the given condition?
A. (1, 3) and (2, 2)
B. (0, 3) and (1, 1)
C. (2, 4) and (3, 2)
D. (3, 0) and (1, 4)
2007-03-07 03:44:03 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
1)
The point where the graph crosses the x axis is the x-intercept and occurs when y = 0
x + y = 3
x + 0 = 3
x = 3
Ans: (3, 0)
2) Just a word problem. Translated:
4x + 2y = 6
So just find a pair of coordinates that works for the equation...it works out the B is the answer.
2007-03-07 03:48:17 · answer #1 · answered by Bhajun Singh 4 · 2⤊ 0⤋
1) in order to cross the x axis, the y component has to be zero.
so x+y =3
x+0=3
x = 3
so the answer is C.
2) let x and y be the numbers
4x +2y =6
substitute each point into the equation.
4(0) + 2(3)= 6 checks
4(1) + 2(1) =6 checks
so the answer is B
2007-03-07 03:51:03 · answer #2 · answered by jaybee 4 · 0⤊ 0⤋
1C (put in y=0, true only along the x-axis)
2B (easy peasy)
2007-03-07 03:50:50 · answer #3 · answered by Anonymous · 0⤊ 0⤋
a)(3,0)
b)(0,3) and (1,1)
2007-03-07 03:49:27 · answer #4 · answered by santmann2002 7 · 0⤊ 0⤋