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The wages w in £) Mark earns is the
number of hours he works n multiplied by
his hourly rate r (in £ per hour). Enter a
formula for Mark's wages and enter the
wage he would earn if he worked 39 hours
at a rate of £5.70 per hour
Formula:
Check

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.

C. y = -3, the line lies on the y-axis and is on -3