Which table was created using the equation y = 2x-1? PLEASE HELP!! QUICKLY
2 answers:
Option A is the correct answer.
If you look at the x and y values in table D, you’ll see that the change in y values is +2, while the change in x values is +1. Thus, the slope is 2/1 or 2.
Another way to look at it is by solving for the slope:
Using coordinates: (3, 5) (4 ,7):
Let x1 = 3
x2 = 4
y1 = 5
y2 = 7
Therefore, the slope (m) = 2.
For the y-intercept, (b): it is the value of y when x = 0.
Let x = 0:
y = mx + b
y = 2(0) -1
y = -1
Therefore, the y-intercept is -1, which is also included in the given equation.
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Answer:
Allison worked 6 hours lifeguarding and 3 hours washing cars.
Step-by-step explanation:
Let
Number of hours Allison worked lifeguarding last week = x
Number of hours Allison worked washing cars last week = y
1. Last week Allison worked 3 more hours lifeguarding than hours washing cars hours, then
<u>Lifeguarding:</u>
$12 per hour
$12x in x hours.
<u>Washing cars:</u>
$8 pere hour
$8y in y hours.
2. Allison earned a total of $96, hence
You get the system of two equations:
Plot the graphs of these two equations (see attached diagram). These line intersect at point (6,3), so Allison worked 6 hours lifeguarding and 3 hours washing cars.
