Answer:
1. y= 3x+9
let x be equal to 0
y= 3(0)+9
y= 9
let y be equal to 0
0=3x+9
use the addition property if equality and u'll get this;
-3x=9
solve for x;
x= -3
ordered pairs that will satisfy to the expression:
(-3,0) & (0, 9)
2. y= 2x-7
let x=0
y= 2(0)-7
y= -7
let y=0
0= 2x-7
use the addition property if equality and u'll get this;
-2x=-7
lastly, solve for x;
x= 7/2
ordered pairs that will satisfy to the expression:
(7/2,0) & (0,-7)
3. x+y= 10
let y=0
0+y= 10
y= 10
let y=0
x+0= 10
x= 10
ordered pairs that will satisfy to the expression:
(10,0) & (0,10)
4. 2x+y =2
note: a number is written first before the variable. (not x2, number should come first)
let x=0
2(0)+y= 2
2+y= 2
y= 2-2
y= 0
let y=0
2x+0= 2
2x= 2
x= 1
ordered pairs that will satisfy to the expression:
(1,0) & (0,0)
