Answer:
Step-by-step explanation:
<u>Given:</u>
<u>Substitute x= -3:</u>
- f(-3) = (-3)² - 4 = 9 - 4 = 5
An equation is formed of two equal expressions. Shaquana earns $10 less per hour than Vani.
<h3>What is an equation?</h3>
An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
The equation y=28.8x represents Vani's earnings in dollars and cents, y, for working x hours.
y = 28.8x
y/x = 28.8
Hence, Vani is paid $28.8 per hour.
The amount that Shaquana earned was $653.40 in 33 hours. Therefore, per hour she was paid
Amount per hour = $653.40/33 = $19.8 per hour
The difference between the two is,
Difference = $28.8 - $19.8 = $10
Hence, Shaquana earns $10 less per hour than Vani.
Learn more about Equation:
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Try explaining how you worked the problem and how you did it
Answer:
We have the slope-intercept form of a straight line given by y = mx + b, where m is the slope and b is the y-intercept.
Now, when the slope m is positive, the straight line will slant upward towards the right and when the slope m is negative, the line will slant downwards to the right.
Moreover, the more positive or negative the slope is, the steeper the slant of the corresponding line will be.
The change can be seen in figure 1 below where the slope is changing as 2. 4 and -5.
Further, when the y-intercept b is positive, the line will cross the y-axis above the line y=0 and when the y-intercept b is negative, the line will cross y-axis below y=0.
Moreover, the change in y-intercept will shift the graph of the line in left or right direction.
The shift can be seen below in the second figure, where y-intercept changes from 3, 4 and -5.