All it takes for a relation to be a function is for each possible first number of a pair there's only one possible second number.
So if any of the sets has two pairs with the same first number, that one's not a function.
The last one has (3,2) and (3,5) so isn't a function.
Let’s assume that Laura has x$
Jose = 8+ x
Keith= 3x
So the total is equal to
118= x + 8 +x + 3x
118= 5x + 8
Subtract 8 from both sides
110= 5x
Divide 5 by both sides
22$= x which is what Laura has
Jose will have :8+22= 30$
Keith will have :3*22=66$
Answer:
Domain: {1, 2, 3, 4}
Step-by-step explanation:
The domain of the graph (input values) is the number of pizzas which are plotted on the x-axis while the range (output values) is the cost of pizza, plotted on the y-axis (vertical axis)
The domain therefore would consists of each x-coordinate that represent each point on the graph, which are {1, 2, 3, 4}
Answer:
i just need points lol
Step-by-step explanation:
Answer:
(
35
12
,
13
6
)
Step-by-step explanation:
−
2
x
+
8
=
2
x
5
+
1
y
=
x
(
2
5
)
+
1
Move all terms containing
x
to the left side of the equation.
Tap for more steps...
−
12
x
5
+
8
=
1
y
=
x
(
2
5
)
+
1
Move all terms not containing
x
to the right side of the equation.
Tap for more steps...
−
12
x
5
=
−
7
y
=
x
(
2
5
)
+
1
Multiply both sides of the equation by
−
5
12
.
−
5
12
⋅
(
−
12
x
5
)
=
−
5
12
⋅
−
7
y
=
x
(
2
5
)
+
1
Simplify both sides of the equation.
Tap for more steps...
x
=
35
12
y
=
x
(
2
5
)
+
1
Simplify each term.
Tap for more steps...
x
=
35
12
y
=
2
x
5
+
1
Replace all occurrences of
x
in
y
=
2
x
5
+
1
with
35
12
.
x
=
35
12
y
=
2
(
35
12
)
5
+
1
Simplify
2
(
35
12
)
5
+
1
.
Tap for more steps...
x
=
35
12
y
=
13
6
The solution to the system of equations can be represented as a point.
(
35
12
,
13
6
)
