Answer:
1. y=4
2.x=1
3. Y intercept (0.5)
4.x intercept (-2.5,0)
5.slope is 2
6. y=2x+5
Step-by-step explanation:
1&2use the graph to see that when x is -1 it touches y at 4.
3.Y intercept is where the line touches the Y Axis in this case at (0.5)
4.x intercept is where the line touches at the X axis
5.slope you can do rise over run, it goes up 4
from one point to another and 2 across, 4/2=2.
6. y=mx+b
mx is slope, so its 2 and b is the y intercept is 5 so its 2x+5.
Answer:
Step-by-step explanation:
One approach to this type of word problem is to list the information you are given:
Step 1:
$19.95 = basic monthly charge
$0.05 = per minute charge$23.74 = total monthly billx = the number of minutes used
Step 2:
Next, put these things into an algebraic expression.
Total monthly bill = basic monthly charge + (per minute charge) * (number of minutes used)
Step 3:
Now, plug in the numbers for your first step and solve.
$23.74 = $19.95 + $0.05x
-19.95 -19.95
$3.79 = $0.05x
divide each side by 0.05 to find x
You could also rewrite the problem at step 2. It just depends if you like working with numbers (algebra, variables, etc.) or thinking about the problem in words (more a verbal style of learning).
Number of minutes used = cost for minutes / per minute charge
Number of minutes used = (Total monthly charge - basic monthly charge) / per minute charge
