1 answer:
Let's prove each one:
A) y=x-3
x=0→y=0-3→y=-3=-3 ok
x=2→y=2-3→y=-1 different to 5 No
B) y=x+3
x=0→y=0+3→y=3 different to -3 No
C) y=4x-3
x=0→y=4(0)-3=0-3→y=-3=-3 ok
x=2→y=4(2)-3=8-3→y=5=5 ok
x=3→y=4(3)-3=12-3→y=9=9 ok
x=4→y=4(4)-3=16-3→y=13=13 ok
D) y=4x+3
x=0→y=4(0)+3=0+3→y=3 different to -3 No
Answer: Option C) y=4x-3
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Answer:
y=2/-1+8
Step-by-step explanation:
- -4= (-4,0) -4=x1 0=y1, 8= (0,8) 0=x2 8=y2
- formula is, y2-y1/x2-x1
- 8-0/0-4=8/-4=4/-2= 2/-1
- 2/-1 is the slope or (m), use (-4,0) or (0,8) i used (0,8) because its easier.
- (0,8), 0=x1 8=y1
- formula is y-y1=m(x-x1)
- y-8=2/-1(x-0) ---->distribute
- y-8=2/-1x-0 --->get y alone
+8 +8
- so the answer is y=2/-1+8
#1
x-7>10
x>10 + 7
x>17
#2
3x <= 21
x <= 21/3
x<= 7
#3
5a - 2<18
5a < 18 + 2
5a <20
a <20/5
a<4
#4
2t + 8 >= -4(t +1)
2t +8>= -4t -4
2t + 4t >= -4 - 8
6t >= -12
t>= -12/6
t>= -2
Answer:
Vertical
Step-by-step explanation:
Vertical angles are two nonadjacent angles formed by two intersecting lines.
Positive 28 because to negative will equal a positive number
Answer:
B) both mean and median
Step-by-step explanation:
