Gretchen earns $7 per hour at the local pizza shop. If she works 3 hours in an afternoon, how much money does she earn?
2 answers:
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The graph illustrates a linear function, because the graph is a straight line
The equation of the graph is <em>(d) y = x +3</em>
The points on the line are:
First, we calculate the slope (m)
Substitute values for x1, x2, y1 and y2
Simplify
Divide
The equation of the line is then calculated using the following formula:
Substitute values for m, x1 and y1
Simplify
Open bracket
Hence, the equation of the graph is <em>(d) y = x +3</em>
Read more about linear graphs at:
Answer:
Graph U
Step-by-step explanation:
A graph is used to illustrate the relationship between variables.
For graph U:
Graph U is positive on (-∞, ∞). The graph also increases on (-∞, ∞). The graph approaches 0 as x approaches -∞.
For graph V:
Graph V is positive on (-∞, ∞). The graph also increases on (-∞, ∞). The graph is negative as x approaches -∞.
For graph W:
Graph W is positive on (-∞, 0). The graph also increases on (-∞, 0). The graph approaches 0 as x approaches -∞.
For graph X:
Graph X is positive on (-∞, ∞). The graph also increases on (-∞, ∞). The graph is negative as x approaches -∞
For graph Y:
Graph Y is positive on (-∞, ∞). The graph also decreases on (-∞, ∞). The graph approaches 0 as x approaches ∞.
For graph Z:
Graph Z is negative on (-∞, ∞). The graph also decreases on (-∞, ∞). The graph is approaches 0 as x approaches -∞
