Answer:
Explanation:
4) Money per hour = Total Money / Total Hours
=> 240 / 8
=> $ 30 Per Hour
5) There is a line formula which is "y = mx + b".
In this, "m" is the slope.
"b" is the y-intercept.
"y" is the y-axis line.
"x" is the x- axis line.
y-intecept means that a point on the graph which has the x value as "0" and y value as anything.
Slope is rise / run.
So, by looking at the graph, we can tell that the y-intecept is (0,0). So, the y-intercept is 0.
Slope = y2 - y1 / x2 - x1
=> 10 - 0 / 2 - 0
=> 10/2
=> 5
So, the equation looks like y = 5x.
6) This is the same question as the above one.
=> Y - intercept = (0,5)
So, the y-intecept is +5.
Now, the equation is y = mx + 5
=> Slope.
=> Slope of the points (0,5) and (2,8).
We used points (2,8) because the line passes through these points.
=> 8 - 5 / 2 - 0
=> 3 / 2
So, the equation is y = 3/2x + 5
7) By looking at Rebecca's equation, we can tell that her hourly pay is $9.25.
For Andrew's hourly pay, we need to find the slope of the points.\
Slope = y2 - y1 / x2 - x1
=> 57 - 47.5 / 6 - 5
=> 9.5 / 1
So, the equation for Andrew looks like y = 9.5x
So, we can tell that Andrew's hourly pay is 9.5. Rebecca's hourly pay is 9.25