Consider the slope-intercept form y =mx + b, where m is the slope and be is the y-intercept.
What is the slope (m) of the graph? The points move up 4 and over 2, so the slope equals 4 ÷ 2 = 2. Option B is the only graph with a slope of 2, so we already know that the answer is B) y=2x.
To confirm, check the y-intercept. You can see that the graph will pass through the point (0,0), which means b=0.
Answer:
120 miles
Step-by-step explanation:
Step up a portion. Here, 1 cm is to 1.5 cm as 80 mi is to x mi
1/1.5 = 80/x
Now solve for x by cross multiplying
x = 120
Answer is D.
28:44 is the ratio but you have to simplify it. Divide both by 4. 28 divided by 4 = 7; 44 divided by 4 = 11
To solve this problem you must apply the proccedure shown below:
1. You have that:
- T<span>he equation d=1/2(n(n-3)) gives the number of diagonals for the polygon.
- The polygon that has 65 diagonals..
2. When you clear n, you obtain:
d=n(n-3)/2
d=(n^2-3n)/2
2x65=n^2-3n
n^2-3n-130=0
3. When you solve the quadratic equation, you obtain:
n=13
Therefore, the answer is: 13 sides. </span>
